Generally made of leather or canvas, a shoulder holster is sling for a firearm that is worn around the shoulder, with the gun resting just under the armpit area. If worn beneath a coat, the shoulder holster can conceal the firearm from view.
"A vertical shoulder holster" by Michael E. Cumpston is licensed under CC BY-SA.
A01 The Blessing Way (01-07) p. 166
A08 The Ghostway (05-03), p. 100 A08 The Ghostway (05-03), p. 256
Vocabulary.com N.d. Shoulder holster. http://www.vocabulary.com/dictionary/shoulder%20holster, accessed January 14, 2015.
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