1. round clam Atlantic coast round clams with hard shells
  2. giant clam a large clam inhabiting reefs in the southern Pacific and weighing up to 500 pounds
  3. roundelay a song in which a line or phrase is repeated as the refrain
  4. ground glass glass that diffuses light due to a rough surface produced by abrasion or etching
  5. ground cloth a waterproofed piece of cloth spread on the ground (as under a tent) to protect from moisture
  6. roundworm unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic
  7. roundel English form of rondeau having three triplets with a refrain after the first and third
  8. grand slam winning all of the tricks in a hand of bridge
  9. round-arm with the arm swung round at shoulder height
  10. roundly in a round manner
  11. roundtable a meeting of peers for discussion and exchange of views
  12. ground plan a floor plan for the ground level of a building
  13. razor clam marine clam having a long narrow curved thin shell
  14. rapid climb a rapid rise
  15. round file a file with a circular cross section
  16. blood clam red-blooded clam
  17. sound film motion-picture film with sound effects and dialogue recorded on it
  18. round the clock without stopping
  19. round-the-clock at all times
  20. hard clam an edible American clam