Portion of chicken for the beater? (9)
I believe the answer is:
drumstick
This clue might be a double definition.
'portion of chicken' is the first definition.
'drumstick' can be an answer for 'portion' (drumstick is a kind of portion). I am not sure about the 'of chicken' bit.
'the beater?' is the second definition.
(stick for beating a drum)
'for' is the link.
Can you help me to learn more?
(Other definitions for drumstick that I've seen before include "What beats" , "Chicken leg (for a percussionist?)" , "piece of chicken?" , "a bit of leg?" , "Tibia of dressed fowl" .)