incunabulum
Concise Oxford English Dictionary © 2008 Oxford University Press:
incunabulum /ˌɪnkjʊˈnabjʊləm/ (also incunable /ɪnˈkjuːnəb(ə)l/)
▶noun (pl. incunabula) an early printed book, especially one printed before 1501.
– origin C19: from L. incunabula (neut. pl.) ‘swaddling clothes, cradle’.
'incunabulum' also found in these Oxford entries:

