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

• paving
• paving debate
• paving debates
• pavings
• paving-stone
• paving-stones
• pavior
• paviors
• paviour
• paviours
• pavis
• pavise
• pavises
• pavlova
• pavlovas
• Pavlovian
• Pavo
• pavonazzo
• pavonazzos
• pavone
• pavones
• pavonian
• pavonine
• pavé
• pavés