Definition of "Humour" :

noun: the trait of appreciating (and being able to express) the humorous

noun: the quality of being funny

noun: the liquid parts of the body

noun: (Middle Ages) one of the four fluids in the body whose balance was believed to determine your emotional and physical state

noun: a message whose ingenuity or verbal skill or incongruity has the power to evoke laughter

noun: a characteristic (habitual or relatively temporary) state of feeling

verb: put into a good mood