Translating "臂臑", acupuncture point LI-14

The reasoning for translating "臂臑" as "Upper Arm" from Chinese into English. This is the original name of acupuncture point LI-14 (Large Intestine 14).

Upper Arm  (LI-14)
臂: Arm
臑: Upper arm

Explanation of the point name

This point is located on the upper arm, and has an influence there (so, not on the forearm).

It is not really clear to me, why the character 臑, which means 'upper arm,' is combined with 臂, 'arm.' Is it to denote that this point's effect is mostly on the limb itself? Is it to get two characters, which all point names have at the least?

1st character

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No other point names with this character.

2nd character

Upper arm
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Point names with

For consistency in the translations, it is necessary to be aware of how the character is translated elsewhere. These are the point names it is in.

LI-14 臂臑 Upper Arm
SI-10 臑兪 Upper Arm Increase
TB-13 臑會 Upper Arm Junction

Nearby points

Sometimes the names of consecutive points on a meridian are related. Being aware of nearby points can help to translate consistently in such a situation.

LI-11 曲池 Pond at the Bend
LI-12 肘髎 Elbow Bone Notch
LI-13 手五里 Hand's Five Quarter Miles
LI-14 臂臑 Upper Arm
LI-15 肩髃 Shoulder Bone
LI-16 巨骨 Big Bones
LI-17 天鼎 Heaven's Tripod