▪ I. plonge, n. Fortif.
(plɒndʒ)
[After F. plongée.]
‘The superior slope given to the parapet’ (Stocqueler Milit. Encycl. 1853); = plunge n. 6.
▪ II. † plonge, v. Obs.
(plɒndʒ)
[var. of plunge.]
trans. To cleanse (an open drain or sewer) by stirring up the mud at the bottom so that the outward flow may carry it off.
| 1851 Mayhew Lond. Labour (1861) II. 425/1. Ibid. 427/1 ‘When we go plonging’, one man said, ‘we has long poles with a piece of wood at the end of them, and we stirs up the mud..while the tide's a going down..and lets out the water, mud, and all, into the Thames’. |