mopus¹ /mopˈəs/ or mawpus /möˈpəs/ (old sl)

A small coin

• rock socks
• rock-solid
• rock sparrow
• rock sparrows
• rocksteadies
• rock-steady
• rocksteady
• rock tar
• rock temple
• rock temples
• rock the boat
• rock tripe
• rock tripes
• rock turbot
• rockumentary
• rock up
• rock violet
• rock violets
• rockwater
• rockwaters
• rockweed
• rockweeds
• rock wood
• rock wool
• rock wools