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

• urbanites
• urbanities
• urbanity
• urbanization
• urbanizations
• urbanize
• urbanized
• urbanizes
• urbanizing
• urban legend
• urban legends
• urban myth
• urbanologies
• urbanologist
• urbanologists
• urbanology
• urban renewal
• urban renewals
• urbi et orbi
• URC
• urceolate
• urceoli
• urceolus
• urceoluses
• urchin