dial. [Origin obscure. Cf. SWAD sb.3] A bean- or pea-shell.
1659. Torriano, The swab (or cod, of beanes pease, &c.), scaffa, guscio [cf. Guscio
swad].
1706. Phillips (ed. Kersey), Swab, a Cod of Beans.
182580. Jamieson, Swab, the husk of the pea; pease swabs.