What does "jockstrap" mean?

An athletic supporter worn by men and boys to support the genitals during strenuous exercise.

What is a synonym for "jockstrap"?

Common synonyms include: athletic supporter, advocate, arm, back, backbone, backing.

Pronounced //ˈd͡ʒɑkstɹæp//.

/ˈd͡ʒɑkstɹæp/ noun

noun ·Uncommon ·Advanced level

Noun

1
An athletic supporter worn by men and boys to support the genitals during strenuous exercise.
"With their jock-straps pinching, they slouch to attention While queueing for sarnies at the office canteen."
2
a support for the genitals worn by men engaging in strenuous exercise wordnet

"Always wear a jockstrap and cup when you play baseball."

Compound of (dated slang) jock (“penis”) + strap; from the earlier forms bike jockey strap and jockey strap.