suckling
noun [ C ], adjective [ before noun ] old-fashioned uk/ˈsʌk.lɪŋ/ us/ˈsʌk.lɪŋ/
（未断奶的）乳兽，幼兽
(an animal that is) still young enough to be drinking milk from its mother
The main course of the feast was roast suckling pig. 筵席的主菜是烤乳猪。