(1):

(v. i.) To sound, as a bell; to knell.

(2):

(v. t.) To ring, as a bell; to strike a knell upon; to toll; to proclaim, or summon, by ringing.

(3):

(n.) A little round hill; a mound; a small elevation of earth; the top or crown of a hill.

(4):

(n.) The tolling of a bell; a knell.