Tool making holes everyone heard (3)
I believe the answer is:
awl
'tool making holes' is the definition.
'awl' can be an answer for 'tool' (I've seen this in another clue). I'm not certain of the 'making holes' bit.
'everyone heard' is the wordplay.
'everyone' becomes 'all' (all people).
'heard' indicates a 'sounds like' (homophone) clue.
'all' is a homophone of 'AWL'.
Can you help me to learn more?
(Other definitions for awl that I've seen before include "Instrument for boring holes" , "Using sharp tool" , "Cobbler's tool" , "Law about a drilling tool" , "Pointed tool for making small holes" .)