@MDG –
“About the word yarmulke, from etymonline.com
yarmulke (n.) 1903, from Yiddish yarmulke, from Polish jarmułka, originally “a skullcap worn by priests,” perhaps ultimately from Medieval Latin almutia “cowl, hood.”
Two points:
(1) It is well known and widely accepted (see “The Word” and “Safah Achas”) that the etymology of many words as found in the more scholarly dictionaries are not only incorrect, but, at times, purposefully misleading.
(2) Upon hearing an Iranian Jew refer to a yarmulka, I asked him if that is how it was referred to in Iran from where he immigrated as an adult (married with school-age children). He answered of course. So it is unlikely the word is of Polish origins. It is far more likely the Polish word has its origins in the Yiddish-adopted, Lashon HaKodesh based word.