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

• ring-dropping
• ring dyke
• ring dykes
• ringed
• ringed plover
• ringed plovers
• ringed snake
• ringed snakes
• Ringelmann chart
• ringent
• ringer
• ringers
• Ringer's solution
• ringette
• ringettes
• ring-fence
• ring-fenced
• ring-fences
• ring-fencing
• sprouting broccoli
• sproutings
• sprouts
• spruce
• spruce beer
• spruce beers