Grass that grows after the main hay harvest, used as late-season pasture for livestock, or new grass growth following mowing.
From 'after' (Old English 'æfter') combined with 'grass' (Old English 'græs', from Proto-Germanic 'grasaz'). Agricultural term dating to Middle English.
Farmers depend on aftergrass—that second growth after cutting hay—to fatten cattle in late summer before winter, and the quality of aftergrass often determined whether livestock survived the cold months healthy or weak.
Complete word intelligence in one call. Free tier — 50 lookups/day.