גָּג (gâggawgnoun|masculineroof)
[Heb] גָּג ETCBC: גָּג‎ (subs|roof) OSHL: c.an.ae TWOT: 312 GK: H1511 Greek: δῶμα, κοιλία
Derivation: probably by reduplication from גָּאָה;
Strong's: a roof; by analogy, the top of an altar
KJV: roof (of the house), (house) top (of the house).