炷 炷 zhu4
wick of an oil lamp; to burn (incense etc); measure word for lit incense sticks

strokes 9
radical
火
火
strokes after radical 5
艾炷 艾炷 ai4 zhu4
moxa cone

艾炷灸 艾炷灸 ai4 zhu4 jiu3
cone moxibustion (TCM)