reef (n.)
- ait
- archipelago
- arrest
- atoll
- backwater
- bank
- bar
- bill
- brake
- breakwater
- cape
- cay
- check
- curb
- delay
- delta
- flat
- ford
- forearm
- foreland
- head
- headland
- hedge
- holm
- hook
- insularity
- island
- isle
- islet
- key
- moderate
- mull
- naze
- ness
- peninsula
- pitfall
- point
- promontory
- retard
- rocks
- sandbank
- sandbar
- sands
- shallow
- shelf
- shoal
- slow
- spit
- spur
- stay
- tongue
- undercurrent
- undertow
