choker >> ˈtʃəʊkə
Definition: [noun] a necklace or ornamental band of fabric that fits closely round the neck.
Example: her only ornament was a simple pearl choker
Definition: [noun] a cable looped round a log to drag it.
Definition: [noun] an extremely upsetting experience.
Example: saying our farewells—that was a bit of a choker
Definition: [noun] a sports player who fails to perform at a crucial point as a result of nervousness.
Example: when I was playing on the tour, I was a choker