A cat can do it in many ways (3)
I believe the answer is:
mew
'a cat can do' is the definition.
I can't tell whether this defines the answer.
'it in many ways' is the wordplay.
'it' becomes 'e' ('e' can mean 'electronic' which is similar to 'IT').
'in' indicates putting letters inside.
'many ways' becomes 'mw' (this could be a standard abbreviation I've not previously seen).
'e' going into 'mw' is 'MEW'.
Can you help me to learn more?
(Other definitions for mew that I've seen before include "Seagull" , "Make sound like cat, or a gull" , "Miaow" , "Sound made by a cat" , "Feline sound" .)