Nasal
Middle English (in nasal (sense 2 of the noun)): from medieval Latin nasalis, from Latin nasus ‘nose’.
wiktionary
From Middle English, from Medieval Latin nāsālis, from nāsus(“the nose”) + -ālis(“-al”, adjectival suffix). Doublet of nasalis.
etymonline
nasal (adj.)
early 15c., nasale, "of or pertaining to the nose or nostrils," from Medieval Latin, from Latin nasus "nose, the nose, sense of smell," from PIE root *nas- "nose."
Of speech sounds, "uttered with resonance in the nose," attested from 1660s. As a noun, "letter or sound uttered through or partly through the nose," from 1660s. Earlier noun senses were "medicinal fluid for the nose" (early 15c.) and "part of a helmet which protects the nose and adjacent parts" (nasel, c. 1300). Related: Nasalization.
