1. Milkweed of central North America; a threatened species
   - Mead's milkweed, Asclepia meadii

Type of: milkweed, silkweed

• knock
• knock against
• knock back
• knock cold
• knock on
• knock over
• knock rummy
• knock-down-and-drag-out
• knock-knee
• knock-kneed
• knock-on effect
• knock-up
• knockabout
• knockdown
• knockdown-dragout
• knocked out
• knocker
• knocking
• knockoff
• knockout
• knockout drops
• knockout punch
• knockwurst
• knoll
• knop