amber tree noun3 •Hymenaea verrucosa (Fabaceae), a New World tree producing copal. •Any of various species of Anthospermum (Rubiaceae), a succulent evergreen shrub whose leaves release a fragrant odour when bruised, especially Anthospermum aethiopicum •(no longer used) Pinites succinifer, extinct, formerly thought to be the source of Baltic amber. formsamber trees