Submerge

Sub*merge" (?), v. t. [imp. & p. p. Submerged (?); p. pr. & vb. n. Submerging (?).] [L. submergere, submersum; sub under + mergere to plunge: cf. F. submerger. See Merge.] 1. To put under water; to plunge.

2. To cover or overflow with water; to inundate; to flood; to drown.

I would thou didst,
So half my Egypt were submerged.
Shak.

Sub*merge" (?), v. i. To plunge into water or other fluid; to be buried or covered, as by a fluid; to be merged; hence, to be completely included.

Some say swallows submerge in ponds.
Gent. Mag.