n. 25B6; verb
the leaves taper at the tip : NARROW, thin (out), come to a point, attenuate.
the meetings soon tapered off : DECREASE, lessen, dwindle, diminish, reduce, decline, die down, peter out, wane, ebb, slacken (off), fall off, let up, thin out.
thicken, increase.
25B6; noun a lighted taper : CANDLE, spill, sconce; historical rushlight.