Compound of 彫刻(ちょうこく) (chōkoku, “to chisel”) + 具(ぐ) (gu, “tool”) + 座(ざ) (-za, “constellation”).
ちょうこくぐ座(ざ) • (Chōkokuguza) ←てうこくぐざ (teukokuguza)?