Crossword Genius

X measures speed (5)

Ross

I believe the answer is:

times

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

This could be a double definition.

'x' is the first definition.
(I've seen this before)

'measures speed' is the second definition.
'times' can be an answer for 'measures' (timing is a kind of measuring). I am unsure of the 'speed' bit.

Can you help me to learn more?

(Other definitions for times that I've seen before include "Big Apple's theatre district" , "operator" , "- - they are a-changin'" , "See 1" , "Paces" .)

I've seen this clue in The Sun.
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