The constellation 1a) Great Bear, Ursa Major 1b) (TWOT) Arcturus
Full Brown-Driver-Briggs lexicon entry
עַ֫יִשׁnoun feminine a constellation, perhaps Great Bear (compare especially Di) (point perh, עִיֻּשׁ (see Bu and references), compare Syriac PS2866, Brock., name of a star); — עַלבָּֿנֶיהָ׳וְעJob 38:22 = עָשׁJob 9:9 (both + כִּימָה, כְּסִיל etc.).