(a) To increase in size or volume (as by absorption of moisture); also, of a frog: grow larger, enlarge; make (earth) swell (by saturating it with water); (b) to increase in quantity, intensity, or……

Of ocean waves: to well up, become turbulent; also, of sighs: increase in intensity. …

Pathol. Of a wound, sore, etc.: to become blistered or pustulate, develop weals; also, fester, suppurate; ppl. whelinge as adj.: purulent, festering. …