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)

• upcaught
• up-Channel
• upcheard
• upcheer
• upcheered
• upcheering
• upcheers
• upchuck
• upchucked
• upchucking
• upchucks
• upclimb
• upclimbed
• upclimbing
• upclimbs
• upclose
• up close and personal
• upclosed
• upcloses
• upclosing
• upcoast
• upcoil
• upcoiled
• upcoiling
• upcoils