光線こうせん Common Noun English jmdict 1 noun (common) (futsuumeishi) ray (of light);beam;light このランプは強い光線を出す。 This lamp sends out a powerful beam.
光線を遮るこうせんをさえぎる Expression Godan English jmdict 1 expressions (phrases Godan verb with 'ru' ending to intercept the light