akasah

ākāśaḥ — the subtle form of sky, sound; SB 11.16.37
ākāśāḥ — sky or ether; SB 11.21.5
ghāṭa-ākāśaḥ — the sky within the pot; SB 12.5.5
ākāśaḥ — sky; SB 12.5.5
ākāśaḥ — the sky; SB 12.5.8
ākāśaḥ iva — in the same way as the sky; SB 12.6.67