Where does “mob cap” come from?

mob cap (English) comes from English mob, from English mobile, from Latin mōbilis, from Latin -bilis, from Proto-Italic -ðlis, from Proto-Indo-European -dʰlis, from Proto-Indo-European -dʰlom — Alternative form of *-trom; instrumental suffix;...

mob cap (English): A plain cap or headdress for women or girls,...

Definitions

  1. A plain cap or headdress for women or girls,...

Ancestry of “mob cap”, step by step

mob cap traces back through two separate lines of ancestry.

via English mob

StepLanguageWordMeaning
1EnglishmobA large or disorderly group of people; especially...
2EnglishmobileCapable of being moved, especially on wheels;...
3Latinmōbilismovable, loose
4Latin-bilis-ble
5Proto-Italic-ðlisForms adjectives from verb stems indicating capacity or worth of being acted on
6Proto-Indo-European-dʰlis
7Proto-Indo-European-dʰlomAlternative form of *-trom; instrumental suffix;...

via English Cap

StepLanguageWordMeaning
1EnglishCapA nickname for the captain of a team, ship, etc
2EnglishCapricornSomeone with a Capricorn star sign
3FrenchCapricorneCapricorn
4LatinCapricornusCapricornus, the constellation of the zodiac
5Latincapera male goat, billy goat; vocative singular of...
6Proto-Italic*kaproshe-goat
7Proto-Indo-Europeankáproshe-goat, billy goat
Every word from Proto-Indo-European -dʰlomEvery word from Latin -bilisEvery word from Latin mōbilis