taper

Short definition from Wiktionary

Noun

1. 1
   A slender wax candle.
2. 2
   A small light.
3. 3
   A tapering form; gradual diminution of thickness and/or cross section in an elongated object.
4. 4
   The portion of an object with such a form.
5. 5
   Ellipsis of machine taper.
6. 6
   A thin stick used for lighting candles, either a wax-coated wick or a slow-burning wooden rod.
7. 7
   A cone-shaped item for stretching the hole for an ear gauge (piercing).
8. 8
   Gradual reduction over time.
9. 9
   One who operates a tape machine.
10. 10
    Someone who works with tape or tapes.

Verb

1. 1
   To make thinner or narrower at one end.
2. 2
   To become thinner or narrower at one end.
3. 3
   To diminish gradually.
4. 4
   To tighten monetary policy.

Adjective

1. 1
   Tapered; narrowing to a point.