שָׁמַיִם shâmayim (H8064)

the sky (as aloft; the dual perhaps alluding to the visible arch in which the clouds move, as well as to the higher ether where the celestial bodies revolve)

1) heaven, heavens, sky 1a) visible heavens, sky 1a1) as abode of the stars 1a2) as the visible universe, the sky, atmosphere, etc 1b) Heaven (as the abode of God)

dual of an unused singular שָׁמֶה; from an unused root meaning to be lofty;