Ramus

n. branch, offshoot

Ramus can refer to: Petrus RamusA portion of a bone (from Latin ramus, "branch"), as in the Ramus mandibulæ or Superior pubic ramusA nerve ramus such as the Dorsal ramus of spinal nerve
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Noun
1. the posterior part of the mandible that is more or less vertical
(hypernym) bone, os
(part-meronym) condylion

(n.)
A branch; a projecting part or prominent process; a ramification.
  

A standard medical dictionary contains over 13 pages full of entries to the word ramus. Why? Because ramus in Latin means a branch and all sorts of anatomic items such as blood vessels and nerves quite naturally have branches. So, for example, medicine is plagued with the likes of the ramus acetabularis arteriae circumflexae femoris medialis which is simply the branch of an artery that goes to the acetabulum (the socket) of the hip joint.