A part or organ, attached to a main structure and smaller in function or size – in skin, common examples include hair follicles and sweat glands. These components are altered in stretch marks.

the legs and pedipalps of a spider

Ear-shaped appendage of either atrium of the Heart. (Dorland, 28th ed)

Appendages of the Uterus which include the Fallopian Tubes, the Ovary, and the supporting Ligaments of the Uterus (Broad Ligament; Round Ligament).

Relatively small portions of a vessel projecting beyond its main outline, as shown by cross-sections and water-sections. The word applies to the following parts of the stern and stern post: the keel b [..]

Structures extending beyond the main hull. They include items like shafting, rudder, bossing, struts and bilge keels.

structures at the end of abdomen: 2 in females, 3 (2 superior, 1 inferior) in male dragonflies, 4 (2 superior, 2 inferior) in male damselflies; distinctive of species

Any of the evaginations of the body wall whicharticulate with the body wall and serve a sensory, locomotory, or reproductive function; legs, wings, antennae, cerci, etc.

appendage|lang=en

any part of a ship that protrudes out of the main hull form such as rudder bilge keels etc.