stuff ‧ ing /ˈstʌfɪŋ/ BrE AmE noun [uncountable]
1 . a mixture of bread or rice, onion etc that you put inside a chicken, pepper etc before cooking it:
sage and onion stuffing
2 . soft material that is used to fill something such as a ↑ cushion
⇨ knock the stuffing out of somebody at ↑ knock 1 (12)