D defs.my
Entry 2 senses Webster, 1913

Boulevard

/bo͝ol'-əv-ärdˌ/ · Bou·le·vard · IPA /ˈbʊləvɑɹd/
01 n. Originally, a bulwark or rampart of fortification or fortified town.
  1. 1.
    Originally, a bulwark or rampart of fortification or fortified town.
  2. 2.
    A public walk or street occupying the site of demolished fortifications. Hence: A broad avenue in or around a city.