clastic /klasˈtik/

1. (of sedimentary rock) composed of fragments (clasts) of older rock, fragmental (geology)
2. Divided or divisible into parts (biology)

• river dolphin
• river dolphins
• river-dragon
• river-dragons
• river drift
• river drifts
• river-driver
• river-drivers
• rivered
• riveret
• riverets
• river flat
• riverfront
• riverfronts
• river god
• river gods
• river head
• river heads
• river-hog
• river-hogs
• river horse
• river horses
• riverine
• river-jack
• river-jacks