(uncountable) The quality of being amusing, comical, funny.
Example: She has a great sense of humour, and I always laugh a lot whenever we get together.
(uncountable) A mood, especially a bad mood; a temporary state of mind or disposition brought upon by an event; an abrupt illogical inclination or whim.
Example: He was in a particularly vile humour that afternoon.
(archaic or historical) Any of the fluids in an animal body, especially the four "cardinal humours" of blood, yellow bile, black bile and phlegm that were believed to control the health and mood of the human body.
Example: For some days a fistula lacrymalis had come into my left eye, which discharged an humour, when pressed, that portended danger.
(medicine) Either of the two regions of liquid within the eyeball, the aqueous humour and vitreous humour.
(obsolete) Moist vapour, moisture.
