labrum

< /ˈleɪ brə/. Archaeology.

1. an ornamented bathtub of ancient Rome.

noun plural -bra (-brə)

1. a lip or liplike part, such as the cuticular plate forming the upper lip of insects

n.lip or lip-like part, 1816, in various anatomical and zoological uses, from Latin labrum, cognate with labium “lip” (see lip (n.)). Also noted mid-15c. as the name of some herb. n. pl. la•bra (-brə)

1. A lip-shaped anatomical edge, rim, or structure.