'Hard rubber' definitions:

Definition of 'hard rubber'

(from WordNet)
noun
A hard nonresilient rubber formed by vulcanizing natural rubber [syn: hard rubber, vulcanite, ebonite]

Definition of 'Hard rubber'

From: GCIDE
  • Rubber \Rub"ber\, n.
  • 1. One who, or that which, rubs. Specifically: (a) An instrument or thing used in rubbing, polishing, or cleaning. (b) A coarse file, or the rough part of a file. (c) A whetstone; a rubstone. (d) An eraser, usually made of caoutchouc or a synthetic rubber[4]. (e) The cushion of an electrical machine. (f) One who performs massage, especially in a Turkish bath. (g) Something that chafes or annoys; hence, something that grates on the feelings; a sarcasm; a rub. --Thackeray. [1913 Webster]
  • 2. In some games, as bridge or whist, the odd game, as the third or the fifth, which decides the winner when there is a tie between the players; as, to play the rubber; also, a contest determined by the winning of two out of three games; as, to play a rubber of whist. --Beaconsfield. "A rubber of cribbage." --Dickens. [1913 Webster]
  • 3. India rubber; caoutchouc; gum elastic; -- also called natural rubber. [1913 Webster +PJC]
  • 4. Any substance, whether natural or synthetic, resembling India rubber with respect to its elasticity[1]. [PJC]
  • 5. A low-cut overshoe made of natural or synthetic rubber[4], serving to keep the feet and shoes dry when walking in the rain or on a wet surface; -- usually used in the plural. [1913 Webster]
  • 6. A condom. [Slang] [PJC]
  • Antimony rubber, an elastic durable variety of vulcanized caoutchouc of a red color. It contains antimony sulphide as an important constituent.
  • Hard rubber, a kind of vulcanized caoutchouc which nearly resembles horn in texture, rigidity, etc.
  • India rubber, caoutchouc. See Caoutchouc.
  • Rubber cloth, cloth covered with caoutchouc for excluding water or moisture.
  • Rubber dam (Dentistry), a shield of thin sheet rubber clasped around a tooth to exclude saliva from the tooth. [1913 Webster]

Definition of 'Hard rubber'

From: GCIDE
  • Hard \Hard\ (h[aum]rd), a. [Compar. Harder (-[~e]r); superl. Hardest.] [OE. hard, heard, AS. heard; akin to OS. & D. hard, G. hart, OHG. herti, harti, Icel. har[eth]r, Dan. haard, Sw. h[*a]rd, Goth. hardus, Gr. kraty`s strong, ka`rtos, kra`tos, strength, and also to E. -ard, as in coward, drunkard, -crat, -cracy in autocrat, democracy; cf. Skr. kratu strength, k[.r] to do, make. Cf. Hardy.]
  • 1. Not easily penetrated, cut, or separated into parts; not yielding to pressure; firm; solid; compact; -- applied to material bodies, and opposed to soft; as, hard wood; hard flesh; a hard apple. [1913 Webster]
  • 2. Difficult, mentally or judicially; not easily apprehended, decided, or resolved; as a hard problem. [1913 Webster]
  • The hard causes they brought unto Moses. --Ex. xviii. 26. [1913 Webster]
  • In which are some things hard to be understood. --2 Peter iii. 16. [1913 Webster]
  • 3. Difficult to accomplish; full of obstacles; laborious; fatiguing; arduous; as, a hard task; a disease hard to cure. [1913 Webster]
  • 4. Difficult to resist or control; powerful. [1913 Webster]
  • The stag was too hard for the horse. --L'Estrange. [1913 Webster]
  • A power which will be always too hard for them. --Addison. [1913 Webster]
  • 5. Difficult to bear or endure; not easy to put up with or consent to; hence, severe; rigorous; oppressive; distressing; unjust; grasping; as, a hard lot; hard times; hard fare; a hard winter; hard conditions or terms. [1913 Webster]
  • I never could drive a hard bargain. --Burke. [1913 Webster]
  • 6. Difficult to please or influence; stern; unyielding; obdurate; unsympathetic; unfeeling; cruel; as, a hard master; a hard heart; hard words; a hard character. [1913 Webster]
  • 7. Not easy or agreeable to the taste; harsh; stiff; rigid; ungraceful; repelling; as, a hard style. [1913 Webster]
  • Figures harder than even the marble itself. --Dryden. [1913 Webster]
  • 8. Rough; acid; sour, as liquors; as, hard cider. [1913 Webster]
  • 9. (Pron.) Abrupt or explosive in utterance; not aspirated, sibilated, or pronounced with a gradual change of the organs from one position to another; -- said of certain consonants, as c in came, and g in go, as distinguished from the same letters in center, general, etc. [1913 Webster]
  • 10. Wanting softness or smoothness of utterance; harsh; as, a hard tone. [1913 Webster]
  • 11. (Painting) (a) Rigid in the drawing or distribution of the figures; formal; lacking grace of composition. (b) Having disagreeable and abrupt contrasts in the coloring or light and shade. [1913 Webster]
  • Hard cancer, Hard case, etc. See under Cancer, Case, etc.
  • Hard clam, or Hard-shelled clam (Zool.), the quahog.
  • Hard coal, anthracite, as distinguished from {bituminous coal} (soft coal).
  • Hard and fast. (Naut.) See under Fast.
  • Hard finish (Arch.), a smooth finishing coat of hard fine plaster applied to the surface of rough plastering.
  • Hard lines, hardship; difficult conditions.
  • Hard money, coin or specie, as distinguished from paper money.
  • Hard oyster (Zool.), the northern native oyster. [Local, U. S.]
  • Hard pan, the hard stratum of earth lying beneath the soil; hence, figuratively, the firm, substantial, fundamental part or quality of anything; as, the hard pan of character, of a matter in dispute, etc. See Pan.
  • Hard rubber. See under Rubber.
  • Hard solder. See under Solder.
  • Hard water, water, which contains lime or some mineral substance rendering it unfit for washing. See Hardness, 3.
  • Hard wood, wood of a solid or hard texture; as walnut, oak, ash, box, and the like, in distinction from pine, poplar, hemlock, etc.
  • In hard condition, in excellent condition for racing; having firm muscles; -- said of race horses.
  • Syn: Solid; arduous; powerful; trying; unyielding; stubborn; stern; flinty; unfeeling; harsh; difficult; severe; obdurate; rigid. See Solid, and Arduous. [1913 Webster]