'lower pair' definitions:

Definition of 'lower pair'

From: GCIDE
  • Pair \Pair\ (p[^a]r), n. [F. paire, LL. paria, L. paria, pl. of par pair, fr. par, adj., equal. Cf. Apparel, Par equality, Peer an equal.] [1913 Webster]
  • 1. A number of things resembling one another, or belonging together; a set; as, a pair or flight of stairs. "A pair of beads." --Chaucer. --Beau. & Fl. "Four pair of stairs." --Macaulay.
  • Note: [Now mostly or quite disused.] [1913 Webster]
  • Two crowns in my pocket, two pair of cards. --Beau. & Fl. [1913 Webster]
  • 2. Two things of a kind, similar in form, suited to each other, and intended to be used together; as, a pair of gloves or stockings; a pair of shoes. [1913 Webster]
  • 3. Two of a sort; a span; a yoke; a couple; a brace; as, a pair of horses; a pair of oxen. [1913 Webster]
  • 4. A married couple; a man and wife. "A happy pair." --Dryden. "The hapless pair." --Milton. [1913 Webster]
  • 5. A single thing, composed of two pieces fitted to each other and used together; as, a pair of scissors; a pair of pants; a pair of tongs; a pair of bellows. [1913 Webster]
  • 6. Two members of opposite parties or opinion, as in a parliamentary body, who mutually agree not to vote on a given question (in order, for example, to allow the members to be absent during the vote without affecting the outcome of the vote), or on issues of a party nature during a specified time; as, there were two pairs on the final vote. [Parliamentary Cant]
  • Note: A member who is thus paired with one who would have voted oppositely is said to be paired for or paired against a measure, depending on the member's position. [1913 Webster +PJC]
  • 7. (Kinematics) In a mechanism, two elements, or bodies, which are so applied to each other as to mutually constrain relative motion. [1913 Webster]
  • Note: Pairs are named in accordance with the kind of motion they permit; thus, a journal and its bearing form a turning pair, a cylinder and its piston a {sliding pair}, a screw and its nut a twisting pair, etc. Any pair in which the constraining contact is along lines or at points only (as a cam and roller acting together), is designated a higher pair; any pair having constraining surfaces which fit each other (as a cylindrical pin and eye, a screw and its nut, etc.), is called a lower pair. [1913 Webster]
  • Pair royal (pl. Pairs Royal) three things of a sort; -- used especially of playing cards in some games, as cribbage; as three kings, three "eight spots" etc. Four of a kind are called a double pair royal. "Something in his face gave me as much pleasure as a pair royal of naturals in my own hand." --Goldsmith. "That great pair royal of adamantine sisters [the Fates]." --Quarles. [Written corruptly parial and prial.] [1913 Webster]
  • Syn: Pair, Flight, Set.
  • Usage: Originally, pair was not confined to two things, but was applied to any number of equal things (pares), that go together. Ben Jonson speaks of a pair (set) of chessmen; also, he and Lord Bacon speak of a pair (pack) of cards. A "pair of stairs" is still in popular use, as well as the later expression, "flight of stairs." [1913 Webster]