Sentence:  How is an in-your-face black leather thigh-high lace-up boot with a four-inch spike heel like a man's black calf lace-up oxford? They are both made on a <WSD>last</WSD>, the wood or plastic foot-shaped form that leather is stretched over and shaped to make a shoe. 
Meaning of the word marked with <WSD> tags:  A tool for shaping or preserving the shape of shoes.