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

• chubbiness
• chubbinesses
• chubb-lock
• chubby
• chubs
• chuck
• by the yard
• by-thing
• by-things
• by-time
• by times
• bytownite
• bytownites
• by transverse
• by trial and error
• by turns
• by virtue of
• by water
• byway
• by way of
• byways
• by weight
• bywoner
• bywoners
• byword