organism, being - a living thing that has (or can develop) the ability to act or function independently

saddle - posterior part of the back of a domestic fowl

underpart - a part lying on the lower side or underneath an animal's body; "the warbler has a white throat and underparts"; "a woodland mouse with white underparts"

horseback - the back of a horse

dock - the solid bony part of the tail of an animal as distinguished from the hair

ambulacrum - one of the five areas on the undersurface of an echinoderm on which the tube feet are located

withers - the highest part of the back at the base of the neck of various animals especially draft animals

cannon, shank - lower part of the leg extending from the hock to the fetlock in hoofed mammals

lumbus, loin - either side of the backbone between the hipbone and the ribs in humans as well as quadrupeds

croupe, rump, croup, hindquarters - the part of a quadruped that corresponds to the human buttocks

gaskin - lower part of a horse's thigh between the hock and the stifle

flank - the side between ribs and hipbone

thorax - part of an insect's body that bears the wings and legs

apparatus - (anatomy) a group of body parts that work together to perform a given function; "the breathing apparatus"

corpus - the main part of an organ or other bodily structure

adnexa, annexa - an accessory or adjoining anatomical parts or appendages (especially of the embryo); "fallopian tubes and ovaries are adnexa of the uturus"

region, area - a part of an animal that has a special function or is supplied by a given artery or nerve; "in the abdominal region"

dilator - a muscle or nerve that dilates or widens a body part

vallecula, groove - (anatomy) any furrow or channel on a bodily structure or part

septum - (anatomy) a dividing partition between two tissues or cavities

external body part - any body part visible externally

anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical structure; "he has good bone structure"

fornix - generally any arch shaped structure (but often it refers to the arched roof of an anatomical space)

system - a group of physiologically or anatomically related organs or parts; "the body has a system of organs for digestion"

ampulla - the dilated portion of a canal or duct especially of the semicircular canals of the ear

tissue - a part of an organism consisting of an aggregate of cells having a similar structure and function

mentum - a projection below the mouth of certain mollusks that resembles a chin

organ - a fully differentiated structural and functional unit in an animal that is specialized for some particular function

venter - a belly-like body part (as the belly of a muscle)

energid, protoplast - a biological unit consisting of a nucleus and the body of cytoplasm with which it interacts

appendage, outgrowth, process - a natural prolongation or projection from a part of an organism either animal or plant; "a bony process"

lobe - (anatomy) a somewhat rounded subdivision of a bodily organ or part; "ear lobe"

rectum - the terminal section of the alimentary canal; from the sigmoid flexure to the anus

shoulder - the part of the body between the neck and the upper arm

torso, trunk, body - the body excluding the head and neck and limbs; "they moved their arms and legs and bodies"

chest, pectus, thorax - the part of the human body between the neck and the diaphragm or the corresponding part in other vertebrates

breast - the front part of the trunk from the neck to the abdomen; "he beat his breast in anger"

thorax - the middle region of the body of an arthropod between the head and the abdomen

hip - either side of the body below the waist and above the thigh

haunch - the hip and buttock and upper thigh in human beings

abdomen, belly, stomach, venter - the region of the body of a vertebrate between the thorax and the pelvis

dorsum - the back of the body of a vertebrate or any analogous surface (as the upper or outer surface of an organ or appendage or part); "the dorsum of the foot"