na-adjective
arching backward; looking up
Archaic adjectival noun describing a posture of bending backward or looking upward. Not used in modern Japanese.
古い和歌に「空様に月を見る」とある。
In an old waka poem, there is a phrase 'looking up at the moon with an arched back.'
Modern word for facing upward or lying on one's back; 空様 is an archaic equivalent with a more poetic or physical nuance of arching backward.
Compound of 空 (sora, 'sky') and 様 (zama, 'direction' or 'state'), literally 'skyward direction'. The exact historical derivation is uncertain.