the Hebrew word for 'sky' is sky, heaven, firmament

ductile, expanse, canopy [ductile means like moldable/malleable]

matches the flat-earth model of course

שָׁמַיִם [sha-me-yum] {sky}
רָקִיעַ [ra-kee-ya] {firmament}
מָרוֹם [ma-rome] {from above}

right on