小水
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う
す
い
Meanings
1
Only when written 小水
Formal or medical term for urine; cross-referenced with 小便, which is more common in everyday speech.
See also: 小便
We collected a urine sample for the test.
2
small amount of water
Literally 'small water'; used in contexts like gardening, cooking, or describing a tiny quantity of water.
I give the potted plant a small amount of water.