noun
1. : a plant of the genus Lotus: as
a. : a European plant ( L. corniculatus ) having claw-shaped pods and now widely used especially in the United States as a forage and fodder plant — called also babies'-slippers
b. : prairie bird's-foot trefoil
2. : a glabrous annual or perennial prostrate Old World herb ( Trigonella ornithopodioides ) related to fenugreek