Cherrystone

noun

1. The quahog clam when of comparatively small size but larger than a littleneck.
2. The stone-like seed of a cherry.
3. small quahog larger than a littleneck.
4. a half-grown quahog.
5. A hard clam (Mercenaria mercenaria) that is larger than a countneck, littleneck or topneck but smaller than a quahog (used as a size classification by fish merchants).