| Word | Definitions | Synonyms |
|---|---|---|
| wasteweir | (noun) a channel that carries excess water over or around a dam or other obstruction | Synonyms: spill, spillway |
| weir | (noun) a low dam built across a stream to raise its level or divert its flow | - |
| (noun) a fence or wattle built across a stream to catch or retain fish | - |