Rare term for the ninth zodiac sign; the usual Japanese name is 人馬宮. This word is mostly encountered in older or specialized astrological texts.
See also: 人馬宮
In old astrology books, Sagittarius is sometimes written as 騎射宮.
射手座 is the common modern term for Sagittarius in both astronomy and astrology.
The kanji 騎 (to ride), 射 (to shoot), and 宮 (palace/sign) combine to mean 'the sign of the mounted archer', a direct translation of the Western zodiac concept. The exact historical derivation is uncertain.