tick

1. A relatively quiet but sharp sound generally made repeatedly by moving machinery. · The steady tick of the clock provided a comforting background for the conversation.
2. A mark on any scale of measurement; a unit of measurement. · At midday, the long bond is up a tick.
3. A short period of time, particularly a second. (colloquial) · I'll be back in a tick.
4. A jiffy (unit of time defined by basic timer frequency).
5. A periodic increment of damage or healing caused by an ongoing status effect.
6. Each of the fixed time periods, in a tick-based game, in which players or characters may perform a set number of actions.
7. A mark (✓) made to indicate agreement, correctness, or acknowledgement. · Indicate that you are willing to receive marketing material by putting a tick in the box
8. 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.

الجمع ticks