tick
A tiny woodland arachnid of the suborder (order).
A relatively quiet but sharp sound generally made repeatedly by moving machinery.
A mark on any scale of measurement; a unit of measurement.
(computing) A jiffy (unit of time defined by basic timer frequency).
(colloquial) A short period of time, particularly a second.
(video games) A periodic increment of damage or healing caused by an ongoing status effect.
(gaming) Each of the fixed time periods, in a tick-based game, in which players or characters may perform a set number of actions.
(Irish) A mark (✓) made to indicate agreement, correctness or acknowledgement.
(birdwatching) A bird seen (or heard) by a birdwatcher, for the first time that day, year, trip, etc., and thus added to a list of observed birds.
(whinchat) (ornithology) A whinchat ((species)).
A tap or light touch.
A slight speck.
To make a clicking noise similar to the movement of the hands of an analog clock.
To make a tick or checkmark.
To work or operate, especially mechanically.
To strike gently; to pat.
To add (a bird) to a list of birds that have been seen (or heard).
Ticking.
A sheet that wraps around a mattress; the cover of a mattress, containing the filling.
To go on trust, or credit.
To give tick; to trust.
(place names) A goat.