Peyer's glands

Pey″er's glands′ (?). [So called from J. K. Peyer, who described them in 1677.] (Anat.) Patches of lymphoid nodules, in the walls of the small intestiness; agminated glands; — called also Peyer's patches. In typhoid fever they become the seat of ulcers which are regarded as the characteristic organic lesion of that disease.