Where does “cú đêm” come from?

cú đêm (Vietnamese) comes from Vietnamese cú, from French coup, from Old French colp, from Latin colpus, from Ancient Greek κόλπος, from Proto-Indo-European kʷelp-, from Proto-Indo-European kʷel- — to turn.

cú đêm (Vietnamese): to stay up very late or to pull an all-nighter

Definitions

  1. to stay up very late or to pull an all-nighter

Ancestry of “cú đêm”, step by step

cú đêm traces back through two separate lines of ancestry.

via Vietnamese

StepLanguageWordMeaning
1Vietnamesean owl; hoot; to knuckle one's head
2Frenchcoupblow, hit, strike; fast and instantaneous action;...
3Old Frenchcolpstrike; hit
4Latincolpusstroke; strike; hit
5Ancient Greekκόλποςbosom, lap; a fold in fabric around the bosom;...
6Proto-Indo-Europeankʷelp-to bend; to curve, arch
7Proto-Indo-Europeankʷel-to turn

via Vietnamese đêm

StepLanguageWordMeaning
1Vietnameseđêmnight; nighttime
2Proto-Vieticteːmnight
Every word from Proto-Indo-European kʷel-Every word from Proto-Indo-European kʷelp-Every word from Ancient Greek κόλπος