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

芒果[mangoo] mango
五芒[gobou] pentagram
芒洋[bouyou] vastness
光芒[koubou] beam of light

芒硝[boushou] sodium sulfate (sulphate)
五芒星[gobousei] pentagram (as used in divination, etc.)
芒種[boushu] "grain in ear" solar term (approx. June 6, when awns begin to grow on grains)
六芒星[rokubousei] hexagram