Definition of "soap-weed" []

• Tall arborescent yucca of southwestern United States (noun)

WordNet. Princeton University. 2010.

• "Grew up on it, in fact, long before the primary ingredient for flavor began to be soap-weed."
• "Moreover, while the soap-weed wash at the fisherman's hut had whitened his skin, his face and hands still retained a smoky pallor which would take some time to wear off."
• "Each excrescence on the plain his half-squinted eyes noticed, and with instant skill relegated to its proper category of soap-weed, mesquite, cactus."