river mussel
noun
Any of various large freshwater mussels constituting the family Unionidae, especially of the genera Unio and Pseudanadonta.
Origin
Mid 17th century.
- main range
- main road
- main rope
- mainsail
- mainsborne
- main sequence
- main-sequence turn-off
- mainsheet
- mainshock
- main sign
- mainspring
- main squeeze
- main stage
- mainstay
- main stem
- main storage
- main store
- mainstream
- mainstreamer
- mainstream jazz
- mainstream media
- main street
- mainstreeting
- main succulente
- maintain