guyana
- n a republic in northeastern South America; formerly part of the British Empire, but it achieved independence from the United Kingdom in 1966
guyot
- n a seamount of volcanic origin (especially in the Pacific Ocean)
guzzler
- n someone who drinks heavily (especially alcoholic beverages)
he's a beer guzzler every night - n a drinker who swallows large amounts greedily
guzzling
- n the drinking of large mouthfuls rapidly
- v drink greedily or as if with great thirst
gwydion
- n Celtic sky god; a magician; giver of arts and civilization
gy
- n the SI unit of energy absorbed from ionizing radiation; equal to the absorption of one joule of radiation energy by one kilogram of matter; one gray equals 100 rad
gym mat
- n sports equipment consisting of a piece of thick padding on the floor for gymnastic sports
gym rat
- n someone who spends all leisure time playing sports or working out in a gymnasium or health spa