Crow runs into trap? (4)
I believe the answer is:
brag
'crow' is the definition.
(I know that crow can be written as brag)
'runs into trap?' is the wordplay.
'runs' becomes 'r' (cricket abbreviation).
'into' is an insertion indicator.
'trap?' becomes 'bag' (bag can mean to trap or secure).
'r' put within 'bag' is 'BRAG'.
(Other definitions for brag that I've seen before include "Card game, like poker" , "'Show off, boast (4)'" , "Boast about garb" , "Boast, exaggerate" , "Boast ? card-game" .)