IPA: /ˈhiːləs/
KK: /ˈhiːləs/
Describing shoes or footwear that do not have a raised heel, resulting in a flat sole.
She prefers heelless shoes for comfort during long walks.
Heelless is formed from "heel" (from Old English "hæle", meaning the back part of the foot) and "-less" (meaning without). The word describes something that lacks a heel.
Think of something that is 'without' ('-less') a 'heel' — that's what heelless means.