taper

[1]	narrow (down) , thin , diminish , come/go down
[2]	taper off , diminish , reduce , thin out , wind down , decrease , fade , lessen , peter out , fall off , wane , subside , let up , slacken , die away/down/off/out , decline , slow (down/up) , weaken , abate , ebb , slump , drop (off) , fall (off) , plummet
[3]	sharpen , point

[1]	wick
[2]	candle , wax light