1. a slight, sharp, recurring click, tap, or beat, as of a clock.
2. a moment or instant.
3. a small dot, mark, check, or electronic signal, as used to mark off an item on a list, serve as a reminder, or call attention to something.
4. Stock Exchange.
• a movement in the price of a stock, bond, or option.
• the smallest possible tick on a given exchange.
5. a jumping fault consisting of a light touch of a fence with one or more feet.
6. a small contrasting spot of color on the coat of a mammal or the feathers of a bird.

7. to emit or produce a tick, like that of a clock.
8. to pass as with ticks of a clock: The hours ticked by.

9. to sound or announce by a tick or ticks: The clock ticked the minutes.
10. to mark with a tick or ticks; check (usually followed by off); to tick off the items on the memo.

11. tick off, Slang.
• to make angry: His mistreatment of the animals really ticked me off.
• to scold severely: The manager will tick you off if you make another mistake.

12. the motive or explanation of one's behavior: The biographer failed to show what made Herbert Hoover tick.

1. any of numerous bloodsucking arachnids of the order Acarina, including the families Ixodidae and Argasidae, somewhat larger than the related mites and having a barbed proboscis for attachment to the skin of warm-blooded vertebrates: some ticks, as the deer tick, are vectors of disease.
2. sheeptick.

1. the cloth case of a mattress, pillow, etc., containing hair, feathers, or the like.
2. ticking.

1. a score or account.

2. on credit or trust: We bought our telly on tick.

1. a recurrent metallic tapping or clicking sound, such as that made by a clock or watch
2. a moment or instant
3. a mark (✓) or dash used to check off or indicate the correctness of something
4. the smallest increment of a price fluctuation in a commodity exchange. Tick size is usually 0.01% of the nominal value of the trading unit

5. to produce a recurrent tapping sound or indicate by such a sound
6. to mark or check (something, such as a list) with a tick
7. the basic drive or motivation of a person

1. any of various small parasitic arachnids of the families Ixodidae (hard ticks) and Argasidae (soft ticks), typically living on the skin of warm-blooded animals and feeding on the blood and tissues of their hosts: order Acarina (mites and ticks)
2. any of certain other arachnids of the order Acarina
3. any of certain insects of the dipterous family Hippoboscidae that are ectoparasitic on horses, cattle, sheep, etc, esp the sheep ked

1. account or credit (esp in the phrase on tick)

1. the strong covering of a pillow, mattress, etc
2. informal short for ticking

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