Ja·nus 
(jānəs)
(jānəs)n.
Roman Mythology
Roman Mythology
The god of gates and doorways, depicted with two faces looking in opposite directions.
[Latin Iānus, from iānus, archway, doorway; see ei- in the Appendix of Indo-European roots.]
- watermelon
- water milfoil
- water mill
- water moccasin
- water mold
- water nymph
- water oak
- water of crystallization
- water of hydration
- water on the brain
- water ouzel
- water park
- water parting
- water pepper
- water pill
- water pipe
- water pistol
- water plantain
- water polo
- waterpower
- waterproof
- water purslane
- water rat
- water-repellent
- water-resistant