- The hole in a lock into which a key fits.
- Basketball The key.
- This style is sure to garner plenty of attention as it hooks around the neck, features a provocative, yet discreet keyhole at the center of the chest, and thanks in large part to its ribbed look, distinctly molds itself to the body.
- However, there are still some modern exotic monokinis, like the Sequin Monokini With Keyhole Cut Out that cover the breasts but wouldn't exactly be considered appropriate for all situations.
- Jantzen Vamp Tankini Top: Similar to its Solid Halterkini Top cousin, this Jantzen style features ruching along its seams, and contains a small keyhole cut-out at its center.
- Style EM-2842: Colored in a jeweled toned baby pink, this sling swimsuit features a bandeau styled top that's equipped with a keyhole cut-out, and a deep V-string bottom.
- Passion D'Anna Half Cup Bra: Done in a fire engine red, this bra is the very height of sensuality and the keyhole at its center does nothing to fan the flames!