slingback
US /ˈslɪŋ.bæk/
UK /ˈslɪŋ.bæk/
1.
a shoe or sandal that is held on the foot by a strap that goes around the back of the heel, rather than by a closed back
:
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She wore elegant black slingbacks to the party.
•
These comfortable slingbacks are perfect for summer.