Crossword Genius

Make your mark in a very short time (4)

Ross

I believe the answer is:

tick

I'm a little stuck... Click here to teach me more about this clue!

'mark in a very short time' is the definition.
'tick' can be an answer for 'mark' (I've seen this before). I'm not sure about the 'in a very short time' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for tick that I've seen before include "Blood-sucking mite or parasitic insect" , "Parasite, moment (colloq.)" , "Blood-sucking insect or sound of old clock" , "Little bloodsucker" , "Not cross" .)

I've seen this clue in the Evening Standard.
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