abacus /abˈə-kəs/

1. A counting frame, consisting of horizontal rods along which movable beads can be slid
2. A level tablet on the capital of a column, supporting the entablature (architecture)

• lumbar
• lumbar puncture
• lumbar punctures
• lumber
• lumber-camp
• lumber-camps
• lumbered
• lumberer
• lumberers
• lumbering
• lumberings
• lumberjack
• Liassic
• liatris
• lib
• lib.
• Lib.
• libant
• libate
• libated
• libates
• libating
• libation
• libations
• libatory