What is the meaning of Tick?

A tiny woodland arachnid of the suborder Ixodida.

A relatively quiet but sharp sound generally made repeatedly by moving machinery.

A mark on any scale of measurement; a unit of measurement.

A jiffy (unit of time defined by basic timer frequency).

A short period of time, particularly a second.

A periodic increment of damage or healing caused by an ongoing status effect.

Each of the fixed time periods, in a tick-based game, in which players or characters may perform a set number of actions.

A mark () made to indicate agreement, correctness or acknowledgement.

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.

A whinchat (Saxicola rubetra).

A tap or light touch.

A slight speck.

To make a clicking noise similar to the movement of the hands in 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.

Credit, trust.

To go on trust, or credit.

To give tick; to trust.

A goat.

singular imperative of ticken

tick (quiet but sharp sound)

Alternative form of titch

Source: wiktionary.org