U.S. [f. CLAM sb.2 1 d.] intr. To dig or collect clams.
1864. Sufferings in Rebel Mil. Prisons, 87. Formerly they had been allowed to go fishing and clamming.
Clam v.5, var. of CLEM to pinch with hunger.
Clam, clamb, obs. or dial. pa. t. of CLIMB.