noun
clear top layer of liquid
Refers to the clear liquid that rises to the top of soup, broth, or similar mixtures. Rare term; 上澄み (うわずみ) is the common modern equivalent.
See also: 上澄み
味噌汁の上汁をすくって飲んだ。
I scooped up and drank the clear liquid on top of the miso soup.
noun
someone else's share; skimmed profit
Idiomatic use, almost exclusively in the set phrase 上汁を吸う (to take a cut or profit from someone else's work). Rare and old-fashioned.
See also: 上汁を吸う
彼は仲介で上汁を吸っている。
He is skimming a profit as a middleman.