brachˈiāte adjective

1. Having branches in pairs at right angles to the stem (botany)
2. Having arms (zoology)

To use the arms as a supplementary means of locomotion

brachiāˈtion noun

brachial artery noun

The great arterial trunk supplying the arm between the armpit and the elbow, direct continuation of the axillary artery

brachium civile /si-vīˈlē/ noun (Latin)

The civil arm

brachium seculare /sek-ū-lāˈrē or sā-kŭ-läˈre/ noun (Latin)

The secular arm