A strap, usually one of a pair, supporting a garment from the shoulder.(noun)
A strap worn across the shoulder to support an item, such as a bag.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "shoulder strap" in a sentence
"Pink-faced and shimmering with sweat, she aggressively adjusted the shoulder strap of her black tank top."
"I put my backpack back on and resecure the shoulder strap for the fiftieth time."