(1):

(v. t.) Appended by prescription, that is, a personal usage for a considerable time; - said of a thing of inheritance belonging to another inheritance which is superior or more worthy; as, an advowson, common, etc. , which may be appendant to a manor, common of fishing to a freehold, a seat in church to a house.

(2):

(n.) A inheritance annexed by prescription to a superior inheritance.

(3):

(v. t.) Hanging; annexed; adjunct; concomitant; as, a seal appendant to a paper.

(4):

(n.) Anything attached to another as incidental or subordinate to it.