Half-Quarter: 1/8 of an ounce of weed.

Hammered: Really, really high.

Harsh: Herb that is too dry.

Hashish: Formed from the resin, shaken or rubbed from the floral clusters, then pressed and shaped.

Hash-monster: Burning a crumb of hashish on point of a pin, trapping the smoke under glass and inhaling through a straw.

Hemp: Fibre producing types of cannabis.

Henry: UK slang for an eighth of an ounce (as in Henry the 8th)

Hit: A puff of a joint or bong.

Hit the Hay: to smoke marijuana.

Homestone: Home-grown weed.

Honey Blunts: Joints sealed with honey.

Hot Boxing: To fill a sealed room with smoke.

Hot Rocks: Hot ash pulled through a pipe that burns your throat.

Hybrid: A new plant resulting from the breeding of two separate plant types.

Hydroplug: Bong.