taper

1a :  a slender candleb :  a long waxed wick used especially for lighting candles, lamps, pipes, or firesc :  a feeble light

2a :  a tapering form or figureb :  gradual diminution of thickness, diameter, or width in an elongated objectc :  a gradual decrease

1 :  progressively narrowed toward one end

2 :  furnished with or adjusted to a scale :  graduated taper freight rates

:  one that applies or dispenses tape

1 :  a slender candle

2 :  a gradual lessening in thickness or width in a long object

1 :  to make or become gradually smaller toward one end The leaves taper to a point.

2 :  to grow gradually less and less The rain tapered off.