bash

bash · verb, noun¹

1. Old Norse · derived from*baska“to strike”
2. Middle English · inherited from*basshen
3. English todaybash

From Middle English *basshen, *basken, likely from Old Norse *baska (“to strike”), akin to Swedish basa (“to baste, whip, lash, flog”), Danish baske (“to beat, strike, cudgel”), German patschen (“to slap”)

bash · verb²

1. Middle English · inherited frombaschen
2. English todaybash

From Middle English baschen, baissen. See abash.

Bash · proper noun³

Short for Bourne-again shell, a pun on the name of the Bourne shell, an earlier Unix shell designed by Stephen R. Bourne, and the Christian concept of being "born again".

Bash · proper noun⁴

Reflecting a dialect in which /s/ assimilates to /ʃ/ before /tʃ/