Roughness (of the sea, etc.).

Physically disturbed or agitated state. Obsolete.

The process, sound, or appearance of bubbling; an agitated or bubbling motion. Originally in nautical phrase a bubble of a sea; cf. bobble, n.1

A confused turmoil or welter of foam or water. Also const. of.

Roughness of the sea brought about by wind blowing at the time.

Extended uses. Nautical slang. A type of rough sea (see quots.).