What is "bignoniaceous"

Bignoniaceous \Big*no`ni*a"ceous\, a. (Bot.) Of pertaining to, or resembling, the family of plants of which the trumpet flower (also called trumpet creeper and trumpet vine) is an example.

a. (context botany English) Of or relating to the flowering plant family Bignoniaceae.

adj. of or pertaining to or characteristic of plants of the family Bignoniaceae