wal·low / ˈwälō/ • v. [intr.] 1. (chiefly of large mammals) roll about or lie relaxed in mud or water, esp. to keep cool, avoid biting insects, or spread scent: watering places where buffalo liked to wallow. ∎ (of a boat or aircraft) roll from side to side: the small jet wallowed in the sky.2. (wallow in) (of a person) indulge in an unrestrained way in (something that creates a pleasurable sensation): I was wallowing in the luxury of the hotel he had been wallowing in self-pity.• n. 1. an act of wallowing: a wallow in nostalgia.2. an area of mud or shallow water where mammals go to wallow, typically developing into a depression in the ground over long use.DERIVATIVES: wal·low·er n.