Any structure shaped like a tub: as, a certain old form of pulpit; a short, broad boat, etc., -- often used jocosely or opprobriously.
I asked him what he meant, and he answered jocosely.
The president spoke jocosely, but there was a significant tone in his voice.
The other answered jocosely and walked away; a door closed behind him.
The horse need not have a mouth, even, he added, jocosely, for reasons nobody need explain.
Somehow, the nickname, jocosely given, remained in use.
He was a bachelor, and his only idea regarding children was that they should be treated jocosely.
He tucked his umbrella under his arm and jocosely spelled his name for her further enlightenment.