Where does “underbarrel” come from?

underbarrel (English) comes from English barrel, from Middle English barel, from Anglo-Norman baril, from Old French baril, from Proto-Germanic barilaz, from Proto-Indo-European bʰēr- — shiny, light brown.

underbarrel (English): Mounted beneath the barrel of a firearm

Definitions

  1. Mounted beneath the barrel of a firearm

Ancestry of “underbarrel”, step by step

underbarrel traces back through two separate lines of ancestry.

via English barrel

StepLanguageWordMeaning
1EnglishbarrelA round vessel or cask, of greater length than...
2Middle Englishbarelbarrel
3Anglo-Normanbarilsmall barrel
4Old Frenchbarilsmall barrel
5Proto-Germanicbarilazvessel for transport, container, jug; basket;...
6Proto-Indo-Europeanbʰēr-shiny, light brown

via English under

StepLanguageWordMeaning
1EnglishunderIn or at a lower level than; As a subject of;...
2Middle Englishunderunder
3Old Englishunderunder, beneath
4Proto-Germanicunderamong, between; under, beneath; under
5Proto-Indo-Europeanh₁entérbetween
6Proto-Indo-Europeanh₁enin; in, inside
Every word from Proto-Indo-European bʰēr-Every word from Proto-Germanic barilazEvery word from Old French baril