(wel′tər) v.i.
1. To roll about; wallow.
2. To lie or be soaked in some fluid, as blood.
3. To surge or move tumultuously, as the sea.
—noun
1. A rolling movement, as of waves; hence, commotion.
2. That in which weltering is done; a wallow. [<MDu. welteren]

(wel′tər) adjective
Designating or pertaining to a horse race in which welterweights are carried. [<welter a heavyweight (horseman),? <WELT, v. (def. 2)]