1. A coarse perennial grass (Sorghum halepense) native to the Mediterranean region, widely cultivated as a forage crop and often considered an invasive weed in North America.
Usage: Usually used in plural or as a mass noun; Also called Aleppo grass or Egyptian grass; Named after William Johnson, a 19th-century South Carolina farmer

Examples

• Johnsongrasses spread rapidly across the pasture during the wet season.
• Farmers often struggle to control johnsongrasses because of their deep root systems.
• The field was overtaken by johnsongrasses within a few years of abandonment.
• Johnsongrasses can tolerate drought better than many other forage crops.
• Livestock readily consume young johnsongrasses as a nutritious feed.