noun
bare livelihood; subsistence
Refers to barely making a living, often used in set phrases like 糊口をしのぐ (eke out a living).
彼は日雇い仕事で糊口をしのいでいる。
He ekes out a living with day labor.
その時代、多くの作家は糊口のために翻訳をしていた。
In those days, many writers did translations to make a bare living.
生計 is a more general and neutral word for livelihood or making a living, while 糊口 emphasizes the struggle and bare minimum.
糊 (paste, sustenance) + 口 (mouth, livelihood). The kanji 糊 originally refers to rice paste, metaphorically extended to mean sustenance or livelihood.