Extended Strong's Greek Lexicon (Abbott-Smith based)
star
Usage: ἄστρον, -ου, τό [in LXX chiefly for כּוֹכָב ;] __(a) mostly in pl. (as in cl.), the stars: Luk.21:25, Act.27:20, Heb.11:12; __(b) in sing. (Xen., al.), only of some noted star; the symbol or image of a star, Act.7:43 (cf. ἀστήρ, and see MM, see word).† (AS)