- incunabula (n.)
[incunabula 词源字典]
- "swaddling clothes," also, figuratively, "childhood, beginnings;" 1824, from Latin incunabula (neuter plural), ultimately from cunae "cradle," from PIE *koi-na-, from root *kei- "to lie; bed, couch."[incunabula etymology, incunabula origin, 英语词源]