Where does “dreinement” come from?

dreinement (Norman) comes from Norman drein, from Old French drain, from Old French derrain, from Vulgar Latin deretranus, from Latin dē, from Latin post, from Latin poste, from Proto-Italic posti — afterwards, post; by, at.

Definitions

Ancestry of “dreinement”, step by step

StepLanguageWordMeaning
1Normandreinlast
2Old Frenchdrain
3Old Frenchderrainfinal, last; last
4Vulgar Latinderetranusto hinder
5Latinof; concerning; about
6Latinpostbehind; after, since, besides, except; behind,...
7Latinposteablative singular of postis
8Proto-Italicpostibehind, after
9Proto-Indo-Europeanpóstiafter
10Proto-Indo-Europeanpósafterwards, post; by, at
Every word from Proto-Indo-European pósEvery word from Proto-Indo-European póstiEvery word from Proto-Italic posti