Plonge \Plonge\, v. t. [See {Plunge}.] To cleanse, as open drains which are entered by the tide, by stirring up the sediment when the tide ebbs. [1913 Webster]
Plong'ee \Plon`g['e]e"\, n. [F. See {Plunge}.] (Mil.) A slope or sloping toward the front; as, the plong['e]e of a parapet; the plong['e]e of a shell in its course. [Sometimes written {plonge}.] [1913 Webster]