Crossword Genius

Hit the first speed trap (5)

Ross

I believe the answer is:

thump

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

'hit' is the definition.
(thumping is a kind of hitting)

'the first speed trap' is the wordplay.
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'first speed trap' becomes 'hump' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
't'+'hump'='THUMP'

Can you help me to learn more?

(Other definitions for thump that I've seen before include "Punch" , "Smack" , "(Sound of) heavy blow" , "Hit forcefully" , "Whack" .)

I've seen this clue in the Sydney Morning Herald.
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