A word for “sister” in the Gnomish Lexicon of the 1910s, a feminized form of G. heth “brother or sister, ✱sibling”, along with several (archaic) variant forms hethwin, hestril, and hethril (GL/48). It was ultimately derived from the early root ᴱ√HESE [HEÞE?] (QL/40).
Gnomish
muin
adjective. safe, secure
muin
noun. kine, cattle
muinos
noun. security
cwist
noun. secret
hethir
noun. sister
hethos
noun. brother
mu
preposition. will, am going to, am about to
mugwen
adjective. secret
mutha
preposition. will, am going to, am about to
tubrin
adjective. hidden
A word in the Gnomish Lexicon of the 1910s glossed “kine, cattle”, apparently a collective noun related to G. mû “ox” (GL/58).