Feel sleepy and indicate acquiescence (3)
I believe the answer is:
nod
'acquiescence' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'feel sleepy and indicate' is the wordplay.
I cannot quite understand how this works, but
'and' could be 'n' (common abbreviation for 'and') and 'n' is present in the answer.
The remaining letters 'od' 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 nod that I've seen before include "Gesture of acceptance" , "Bob the head" , "Move head in agreement" , "Indicate agreement (or sleepiness!)" , "Incline the head" .)