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.

Source: Webster's Revised Unabridged Dictionary (1913)