la·brum 
(lābrəm)
(lābrəm)n. pl. la·bra (-brə)
1. A lip or liplike structure, such as the one forming the roof of the mouth in insects.
2. The outer margin of the opening of a gastropod shell.
[Latin, lip; see leb- in the Appendix of Indo-European roots.]
- magic lantern
- magic mushroom
- magic number
- magic square
- magic word
- Maginot Line
- magisterial
- magisterially
- magisterium
- magistracy
- magistral
- magistrate
- magistrature
- Maglemosian
- maglev
- magma
- magmatic
- Magna Carta
- Magna Charta
- magna cum laude
- Magna Graecia
- magnanimity
- magnanimous
- magnanimously
- magnanimousness