c. 1300 (late 13c. as a surname, late 14c. as the name of a dog), "merry, cheerful, naturally of a happy disposition; comical; suggesting joy or merriment," from Old French jolif "festi [..]

cheerful; full of fun

To dream that you feel jolly and are enjoying the merriment of companions, you will realize pleasure from the good behavior of children and have satisfying results in business. If there comes the least rift in the merriment, worry will intermingle with the success of the future.   

A sailor’s nickname for a marine, who, in his opinion, bears the same relation to a “regular” as a jollyboat or yawl does to a ship. (Danish, jollë, a yawl.)

The favourite in a race.

A pleasant side trip.

Nickname for a Royal Marine.

adv. Very, as in, "It's JOLLY hard work". 2. Happy

bookmaker’s slang for ‘favourite favourite’.

Another term for the favourite in a contest.

The favourite.