choker

from WordNet (r) 3.0 (2006)

choker
    n 1: someone who kills by strangling [syn: {garroter},
         {garrotter}, {strangler}, {throttler}, {choker}]
    2: an unfortunate person who is unable to perform effectively
       because of nervous tension or agitation; "he could win if he
       wasn't a choker"
    3: necklace that fits tightly around a woman's neck [syn:
       {choker}, {collar}, {dog collar}, {neckband}]
    4: a high tight collar [syn: {choker}, {ruff}, {ruffle}, {neck
       ruff}]

from The Collaborative International Dictionary of English v.0.48

Choker \Chok"er\, n.
   1. One who, or that which, chokes.
      [1913 Webster]

   2. A stiff wide cravat; a stock. [Slang]
      [1913 Webster]