Real Dictionary

lupine in American English 1
any of a genus (Lupinus) of plants of the pea family, with palmately compound leaves, racemes of white, rose, yellow, or blue flowers, and pods containing beanlike seeds: used for forage, green manure, etc.
noun: any of numerous plants belonging to the genus Lupinus, of the legume family, as L. albus (white lupine), of Europe, bearing edible seeds, or L. perennis, of the eastern U.S., having tall, dense clusters of blue, pink, or white flowers

lupine in American English 2
of a wolf or wolves
adjective: pertaining to or resembling the wolf

lupine in British English
adjective: of, relating to, or resembling a wolf