intransitive. Of water: To well up, gush or spout forth. Usually const. adverbs forth, out, up, etc.

intransitive. Of water, waves, etc.: to swell or surge up, to overflow. Obsolete.

Of a body of water: To rise above the ordinary level, as a river, or the tide; to rise in waves, as the sea in or after a storm; to rise to the…

intransitive. Of the sea, a river, or other body of water: to increase in height, esp. through tidal action or flooding; to swell. Also with to or…

Of the sea: To swell. Also to grow high.

intransitive. To rise to, or float on, the surface of a liquid; to rise, swell (as the sea). Obsolete.