horseshoe

Short definition from Wiktionary

Noun

1. 1
   The U-shaped shoe of a horse, now typically made of metal; by extension, a representation of this used to play the game horseshoes, hung as a luck charm, etc.
2. 2
   The U shape of a horseshoe.
3. 3
   A well-developed set of triceps brachii muscles.
4. 4
   The symbol ⊃.
5. 5
   An open-faced sandwich originating from Springfield, Illinois, consisting of thick-sliced toasted bread, often Texas toast, a hamburger patty, French fries, and a cheese sauce.
6. 6
   A U-shaped life buoy.

Verb

1. 1
   To apply horseshoes to (a horse).

Proper noun

1. 1
   A barangay of Quezon City, Metro Manila, Philippines.