shrinker

noun

1. Something that makes something else shrink.

   “It's been an everyday sight on the East Coast Main Line since it started testing in 1977... but no longer. They may have been marketed as the 'Journey shrinker' upon their arrival on the route, but time has caught up with the 'InterCity 125s'.”

2. (slang)A psychiatrist; a head-shrinker.
3. A sock-like article used to compress a stump remaining after amputation.
4. One who shrinks or recoils.

   “His peculiar character of shrinker from everything and every one, always retreating into his shell of contemptuous opposition as a snail into his shell, led, perhaps, to his rejection of ordinary phraseology, the simple mode of expression used by the million.”

   “Mr. Druggist, are you a shrinker? Hold a minute now — before getting excited. A late dictionary defines a shrinker in a general sense as one who recoils, or draws back fearfully from something dreaded.”

5. Something that itself shrinks.

   “Sometimes I think that humanity is divided into two classes, the Shrinkers and the non-Shrinkers. If you are a Shrinker, you are able to diminish yourself at will, and to slip into the kingdom of Lilliput, not in the role of Gulliver,”

   “These can be called the Blaster (aggressive), the Shrinker (overly passive), or the Me (effective).”

   “Are you a wishful shrinker? If you haven't dieted because you just plain like good food […]”