'Retard' definitions:

Definition of 'retard'

From: WordNet
noun
A person of subnormal intelligence [syn: idiot, imbecile, cretin, moron, changeling, half-wit, retard]
verb
Cause to move more slowly or operate at a slower rate; "This drug will retard your heart rate"
verb
Be delayed
verb
Slow the growth or development of; "The brain damage will retard the child's language development" [syn: check, retard, delay]
verb
Lose velocity; move more slowly; "The car decelerated" [syn: decelerate, slow, slow down, slow up, retard] [ant: accelerate, quicken, speed, speed up]

Definition of 'Retard'

From: GCIDE
  • Retard \Re*tard"\, v. t. [imp. & p. p. Retarded; p. pr. & vb. n. Retarding.] [L. retardare, retardatum; pref. re- re- + tardare to make slow, to delay, fr. tardus slow: cf. F. retarder. See Tardy.]
  • 1. To keep delaying; to continue to hinder; to prevent from progress; to render more slow in progress; to impede; to hinder; as, to retard the march of an army; to retard the motion of a ship; -- opposed to accelerate. [1913 Webster]
  • 2. To put off; to postpone; as, to retard the attacks of old age; to retard a rupture between nations. [1913 Webster]
  • Syn: To impede; hinder; obstruct; detain; delay; procrastinate; postpone; defer. [1913 Webster]

Definition of 'Retard'

From: GCIDE
  • Retard \Re*tard"\, v. i. To stay back. [Obs.] --Sir. T. Browne. [1913 Webster]

Definition of 'Retard'

From: GCIDE
  • Retard \Re*tard"\, n.
  • 1. Retardation; delay. [1913 Webster]
  • 2. A mentally retarded person. [Colloq. and disparaging] [PJC]
  • 3. a person who is stupid or inept, especially in social situations. [Colloq. and disparaging] [PJC]
  • Retard of the tide, or Age of the tide, the interval between the transit of the moon at which a tide originates and the appearance of the tide itself. It is found, in general, that any particular tide is not principally due to the moon's transit immediately proceeding, but to a transit which has occured some time before, and which is said to correspond to it. The retard of the tide is thus distinguished from the lunitidal interval. See under Retardation. --Ham. Nav. Encyc. [1913 Webster]