Where does “two-lipped” come from?

two-lipped (English) comes from English two, from Middle English two, from Old English twā, from Old English twēġen, from Proto-West Germanic twai-, from Proto-Germanic twai, from Proto-Indo-European dwóh₁ — two.

two-lipped (English): Having two lips; Divided so that segments...

Definitions

  1. Having two lips; Divided so that segments...

Ancestry of “two-lipped”, step by step

two-lipped traces back through two separate lines of ancestry.

via English two

StepLanguageWordMeaning
1EnglishtwoA numerical value equal to 2; this many dots;...
2Middle Englishtwotwo
3Old Englishtwātwo
4Old Englishtwēġentwo; twain
5Proto-West Germanictwai-two
6Proto-Germanictwaitwo
7Proto-Indo-Europeandwóh₁two

via English lipped

StepLanguageWordMeaning
1EnglishlippedHaving a raised lip; Having some specific type of...
2EnglishlipEither of the two fleshy protrusions around the...
3Germanlippelip
4Yiddishליפּlip
5Middle High Germanlippe—
6Old High German*lippa—
7Proto-Germanic*lippjō—
Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Germanic twai →Every word from Proto-West Germanic twai- →