What is 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 called?

submerge — 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. (Webster's 1913.)