Entry 1 sense Webster, 1913 Cultirostral /(-t?-r?s"tral)/ · Cul·ti·ros·tral · IPA 01 a. Having a bill shaped like the colter of a plow, or like a knife, as the heron, stork, etc. 1. Having a bill shaped like the colter of a plow, or like a knife, as the heron, stork, etc.(Zool.)