Pertaining the pyramid-shaped space forming the underside of the shoulder between the upper arm and the side of the chest: "Jesse was being examined by a doctor to determine if there was an infection in the axillary nerves or blood and lymphatic vessels of his armpit."

"The axillary section of the subclavian (under the collarbone) artery that distributes to the axilla, chest, shoulder, and upper extremity."

A bubo in the armpit: "An axillary bubo is an inflamed swelling of a lymph node in the area of the armpit which is characteristic of certain infections; such as, bubonic plague and syphilis."

The hollow spaces under the arms of people where they are joined to the shoulder: "The axillary cavities are terms for the armpits."

The surgical removal of lymph nodes in the armpits: "Axillary dissections are performed though an incision in the axilla or as part of a modified radical mastectomy for women with invasive breast cancer."

The flat band of tissue below the skin that covers tissues, separates different layers of tissue, and encloses muscles: "Axillary fascia forms the basic area of the axilla (underarm area)."

The small hollows under the arms where they join the body at the shoulder: "Jill and Kay were up to their axillary fossae in water."

Any of numerous nodes (collections of tissue) situated around under arm veins that receive lymphatic drainage (almost colorless fluid that travels through vessels and carries cells that help fight infection and disease) from the upper limb, pectoral girdle (bones supporting the front or upper parts of the body), and mammary gland (two half-moon-shaped glands on either side of the adult female chest, which with fatty tissue and the nipples make up the breast): "Jenny's primary physician tried to explain how the axillary glands function and how this might explain why she was having an abnormal feeling in her armpits."

The nerves in the axillae or armpits: "Some of the fibers of the axillary nerves supply the capsule that surrounds the shoulder joints with connective tissue."

The area of the upper chest surrounding the axillae (armpits) which are lateral (to the side) of the pectoral (breast or chest) region: "Viola had her axillary regions checked by the doctor to see if there was any indication of cancer in that part of her body."

The body temperature as recorded by a thermometer placed in the armpit: "Kelvin had his axillary temperature measured and the reading is usually 0.5 to 1 degree Fahrenheit less than the oral temperature."

The large vein passing through the armpit continuous with the basilic vein below and the subclavian vein above: "The axillary nerve supplies three muscles; deltoid (a muscle of the shoulder), teres minor (one of the rotator cuff muscles) and the long head of the triceps brachii (an elbow extensor)."

"The axillary nerves also carry sensory information from the shoulder joints, as well as the skin covering the inferior region of the deltoid muscle or the regimental badge area."