wooden strip

[kingswood]

what do you call a wooden strip used to light a flame

[football]

its called a Taper or a spill.

[Clanad]

More likely, it's a splint. A taper is a type of candle and a spill could be a wooden strip, but it was also a piece of paper used to light a flame. However, a spill plane was a small plane used to shave wood for the spills, so spill could be apt as well.

[blakerica]

a match