| Subject | English | Italian |
| mech.eng. | clam shell bucket | benna mordente |
| mech.eng. | clam shell bucket | benna a valve dentate |
| mech.eng. | clam-shell | a due deflettori |
| mech.eng. | clam-shell nozzle | ugello a due petali |
| ichtyol. | hard shell clam | cappa dura Venus mercenaria |
| fish.farm. | soft-shell clam | cappa molle (Mya arenaria) |