Where does “cul-de-sac” come from?

cul-de-sac (Portuguese) comes from French cul-de-sac, from French cul, from Middle French cul, from Old French cul, from Latin cūlus, from Proto-Celtic kūlos, from Proto-Indo-European ḱuH-ló-, from Proto-Indo-European (s)kewH- — to cover, bedeck; cover.

cul-de-sac (Portuguese): cul-de-sac; blind alley; cul-de-sac; cul-de-sac;...

Definitions

  1. cul-de-sac; blind alley; cul-de-sac; cul-de-sac;...

Ancestry of “cul-de-sac”, step by step

StepLanguageWordMeaning
1Frenchcul-de-sacdead end, cul-de-sac; impasse
2Frenchculbutt, bum, ass, arse; anus; arsehole; asshole;...
3Middle Frenchcularse; ass; anus
4Old Frenchculbottom; the buttock
5Latincūlusthe arse, ass
6Proto-Celtickūloscorner
7Proto-Indo-EuropeanḱuH-ló-
8Proto-Indo-European(s)kewH-to cover, bedeck; cover
Every word from Proto-Indo-European (s)kewH-Every word from Proto-Indo-European ḱuH-ló-Every word from Proto-Celtic kūlos