Where does “단물” come from?

단물 (Korean) comes from Korean 단, from Japanese 短冊, from Japanese 短, from Middle Chinese 短 — short.

단물 (Korean): juice

Definitions

단물 traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	Korean	단	sheaf; end; cape
2	Japanese	短冊	tanzaku; A small strip of paper that can be written on, especially those hung on bamboo or other trees during Tanabata
3	Japanese	短	fault, weak point; minor
4	Middle Chinese	短	short

Step	Language	Word	Meaning
1	Korean	물	water, a liquid widely distributed in the natural...