languet (n.) Look up languet at Dictionary.com
"something in the shape of a little tongue," early 15c., from Old French languete (Modern French languette), literally "little tongue," diminutive of langue "tongue," from Latin lingua "tongue" (from PIE root *dnghu- "tongue"). As the name of a kind of hood in 17c. women's dress it probably is a separate borrowing of the French word.