Where does “제구실” come from?

제구실 (Korean) comes from Korean 구실, from Korean 실, from English seal, from Middle English sel, from Anglo-Norman sëel, from Latin sigillum, from Latin -lus, from Proto-Italic -elos — Forms agent nouns from verbal roots.

Ancestry of “제구실”, step by step

제구실 traces back through two separate lines of ancestry.

via Korean 구실

StepLanguageWordMeaning
1Korean구실duty, role
2Koreanthread, string; a narrow thing, a thin object
3EnglishsealA pinniped (Pinnipedia), particularly an earless seal (true seal) or eared seal
4Middle EnglishselGood fortune, prosperity, luck
5Anglo-Normansëel
6Latinsigillumfigurine, statuette; seal
7Latin-lusAlternative form of -ulus; diminutive suffix
8Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
9Proto-Indo-European-e-lós
10Proto-Indo-European-lósForms agent nouns from verbal roots

via Korean

StepLanguageWordMeaning
1Koreanallomorph of
2Chinese
Every word from Proto-Indo-European -lós