Odd slice removed from cut of beef? (3)
I believe the answer is:
rum
'odd' is the definition.
(rum can mean strange or dubious)
'slice removed from cut of beef?' is the wordplay.
'slice removed from' means to remove the last letter.
'cut of beef?' becomes 'rump' (rump steak).
'rump' with its final letter taken off is 'RUM'.
(Other definitions for rum that I've seen before include "Pirate's grog" , "Odd kind of drink for sailor" , "An alcoholic spirit - sounds odd" , "Strange; spirit" , "Peculiar like sailor's drink (3)" .)