thalweg or talweg /tälˈveg, -vāhh/ (geology)

1. The longitudinal profile of the bottom of a river bed
2. The middle of a main navigable waterway, acting as a boundary between states

• Grecians
• Grecism
• Grecize
• Grecized
• Grecizes
• Grecizing
• Greco-
• Greco-Roman
• grecque
• grecque key
• grecque meander
• grecques
• gree
• greece
• greed
• greedier
• greediest
• greedily
• greediness
• greedinesses
• greeds
• greedy
• greedy guts
• greegree
• greegrees