“It was a used word – that’s what I showed from Chullin.”
The opposite, Rashi in chulin is explaining what ???? means, Rashi dose that for rare words.
“???? is very vague to use to describe Techeiles as blue, considering it can mean other colors as well.”
Find me a word for blue!
“Which Rishonim?”
??”? ??????, ?’ ????? ???? ???? ?????? ??’ ?????, ????”? ????”? ????? ? ?, ????? ???? ????? ?: ???? ???”?, ????? ???? ???? ?? -?, ??????? ?? ?? ?, ???”? ???? ?-?-?, ????”? ????????? ?”? ??’ ????, ???? ????.
“That’s not a raya considering that he explains what he means by ????.”
It shows that the generic word to describe blue was ????.