Started to eat the morsel (3)
I believe the answer is:
bit
'morsel' is the definition.
(synonyms)
'started to eat the' is the wordplay.
I cannot quite see how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found in the answer.
The remaining letters 'bi' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for bit that I've seen before include "Cutting piece of a drill (3)" , "chip?" , "Data measurement unit" , "Segment" , "Mouthpiece of brindle or tip of drilling tool" .)