Meaning

noun a consonant that is produced with the tongue and other speech organs

adjective consisting of or related to language

adjective pertaining to or resembling or lying near the tongue

originLearned borrowing from Medieval Latin linguālis, from lingua (“the tongue; a language, speech”) + -ālis (“-al”, adjectival suffix); equivalent to lingua + -al. Doublet of lingualis.

Etymology from Wiktionary, CC BY-SA 3.0