tri·he·dron 
(trī-hēdrən)
(trī-hēdrən)n. pl. tri·he·drons or tri·he·dra (-drə)
A figure formed by three planes meeting at a point. Also called trihedral.
- grease
- greaseball
- grease gun
- grease hand
- greaseless
- grease monkey
- greasepaint
- grease paint
- grease palm
- grease pencil
- greaseproof
- greaser
- grease someone's hand
- grease someone's palm
- grease (someone's) palm/hand
- greasewood
- greasily
- greasiness
- greasy
- greasy spoon
- great
- Great Abaco
- Great Alföld
- Great Alföld
- great ape