REDBACK
REDBACK Red "back ` (rd "bk `), n. (Zoöl.)
redback
redback |ˈrɛdbak |(also redback spider ) ▶noun a highly venomous Australasian spider which is black with a bright red stripe down the back, closely related to the American black widow. ●Latrodectus mactans hasseltii, family Theridiidae.