Jolly is almost always used as an adjective. The related noun "jollies" is used in plural form and means festive times (UK) or slang for amusement (US) in the usage to get one's jollies.
The plural is bridges.
The plural of "turkey" is "turkeys."
The plural of address is addresses.
The plural form of him, her, or it is them. (objective pronouns)
The plural of cylinder is cylinders.
The plural way to spell studio is studios.
The plural is resources.
The plural is cantaloupes.
The plural is hooves.
The plural is cherries.
The plural is roses.
The plural is "emeralds."
The plural is bridges.
The plural is "recesses".
The plural of "roar" is "roars".
The plural of "frill" is "frills".
The plural is lullabies.