Cuban heel

Short definition from Wiktionary

Noun

1. 1
   A relatively low-style of high heel shoe, characterised by a slightly tapered back and a straight front
2. 2
   A type of heel used for men's boots similar to the heel on cowboy boots
3. 3
   In women's sheer stockings or pantyhose, a prominent thin rectangle heel reinforcement at the base of the back seam.