STEP Hebrew Lexicon: שָׁמַיִם

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)

Aramaic equivalent: sha.ma.yin (שָׁמַ֫יִן "heaven" H8065)