(uncountable) Something funny, e.g. a joke, satire, or parody.
He treated the sensitive subject with enough Humor that no one was offended.
(archaic) Four fluids (blood, yellow bile, black bile and phlegm) that were believed to
control the
health and mood of the human body.
(uncountable) A mood, especially a bad mood.
He was in a particularly vile Humor that afternoon.
(medicine) Either of the two regions of liquid within the eyeball, the aqueous humour and vitreous humour.