Venomous snake — want to catch it (7)
I believe the answer is:
waspish
'venomous snake want to catch it' is the definition.
I can't tell whether this defines the answer.
'venomous snake want to catch' is the wordplay.
'venomous snake' becomes 'asp' (I've seen this in another clue).
'want' becomes 'wish' (wishing is a kind of wanting).
'to catch' is an insertion indicator.
'asp' placed inside 'wish' is 'WASPISH'.
Can you help me to learn more?
(Other definitions for waspish that I've seen before include "Easily-provoked" , "'Very irritable, like a stinger (7)'" , "stingy?" , "Pshaw, is like a stinging insect" , "Bad-tempered like striped insect" .)