語基 is read as ごき (goki) and means base.
ごき
goki
きほんたげんごめん
basic multi-lingual plane
きほんご
basic vocabulary item
きょうつうきご
protolanguage
きご
きそうご
substratum
ごげん
origin of a word
ごく
words
かたりつぐ
to pass down (a story) from generation to generation
ごび
(inflectional) ending of a word
ごをむすぶ
to conclude one's speech
ごは
branch (of a language family)
ごかん
stem (non-inflecting part of a word)