United States jazz musician (1904-1943)
"The band's vintage recording featured a young trumpeter who quickly became known as a waller, though we now recognize him specifically as the legendary US jazz musician from 1904 to 1943."
One who builds walls.
"The local angler proudly displayed his massive catch, a rare waller that had been swimming in the deep river for years."
The place where animals make their bed.
The wels catfish.
Pronunciation spelling of wallow.
"The pronunciation guide on the dictionary app corrected my mistake, showing that 'waller' is actually a variant way to spell 'wallow'."