To touch or tap something lightly, or with a small sharp sound; tap slightly, as a bird when picking up its food; peck.To emit a slight recurring click, like that of a watch or clock.To touch lightly, as in the game of tag or tig; tag.To place a dot on, over, or against; mark with or as with a tick or dot: as, to tick one's i's in writing; to set a dot against, as in checking off the items in a list or catalogue; check by writing down a small mark: generally with off.To note or mark by or as by the regular clicking of a watch or clock.n. A slight touch or tap; a pat.n. A slight sharp sound, as that made by a light tap upon some hard object; also, a recurring click or beat, as of a watch or clock.n. The game known in the United Kingdom as tig, and in the United States as tag. See tag.n. A dot or slight mark: as, the tick over the letter i; the tick used in checking off the items in a list or catalogue.n. A small spot or color- mark on the coat of an animal.n. A speck; a particle; a very small quantity.n. One of many different kinds of mites or acarines which are external parasites of various animals, including man.n. Hence With a qualifying term, a member of the dipterous family Hippoboscidæ.n. The tick-bean.n. The cover or case of a bed, which contains the feathers, hair, corn-shucks, moss, or other materials conferring softness and elasticity.n. Ticking.n. Credit; trust: as, to buy on tick.n. A score, account, or reckoning.To buy on tick or credit; live on credit.To give tick or credit; trust one for goods supplied, etc.n. In a horse, the malady or vice now called cribbing.n. The whinchat.