One of the mysteries of the English language finally explained.
Usually hyphenated. Of a shoe or (less commonly) a boot: that has a low quarter or rear section over the heel; that does not reach above the ankle.
A shoe that does not reach above the ankle; especially a dress or formal shoe. Usually in plural Compare "quarter".
Mid 19th century; earliest use found in Summer-land. From low + quarter.
low quarter/ˌləʊ ˈk(w)ɔːtə/
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