Μοῦσαι (Mousai)
Μοῦσαι is an Ancient Greek form of Μοῦσα, meaning “Mousa — a Muse, goddess of the arts”. It is the nominative plural feminine noun.
Found 104 times in the Ancient Greek texts on Socratos.
Where it is used
Apollonius Rhodius, Argonautica 1.22: πλαζόμενοι· Μοῦσαι δʼ ὑποφήτορες εἶεν ἀοιδῆς.
Euripides, Medea 421: μοῦσαι δὲ παλαιγενέων λήξουσ’ ἀοιδῶν
Euripides, Helen 1345: Μοῦσαί θʼ ὕμνοισι χορῶν.
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.