The term axillary is related to the anatomical term ALAR, which refers to the area of the body near the armpit. Axillary is an adjective that describes something that is located in or near the armpit. It is commonly used to describe lymph nodes, veins, and arteries in the armpit region. Axillary can also refer to the axillary nerve, which is a nerve that runs from the neck to the shoulder and arm.