ぴかぴか光る[pikapikahikaru] to sparkle
旭光[kyokkou] rays of the rising sun
威光[ikou] power
稲光[inabikari] (flash of) lightning
曳光弾[eikoudan] tracer bullet

栄光[eikou] glory
円光[enkou] halo
炎光[enkou] flame
黄道光[koudoukou] zodiacal light
可視光線[kashikousen] visible ray

一糸一毫[isshiichigou] tiny amount
一毫[ichigou] (a) bit
毫も[goumo] (not) in the least
毫釐[gouri] very small quantity
揮毫[kigou] writing

揮毫料[kigouryou] writing or painting fee
毫末[goumatsu] minute amount
毫光[goukou] light that is said to be emitted from some hair or tuft in Buddha's forehead
白毫[byakugou] whorl of white hair on the forehead of the Buddha, represented by a white precious stone on statues of Buddha
寸毫[sungou] a bit