This is the 363rd most frequent French word.
prêt
Ready.
Prêt is an adjective here, meaning 'ready', agreeing in gender with the speaker.
Je suis prêt à partir.
I am ready to leave.
'Prêt' is used as a noun, meaning 'loan' in this context.
Il a reçu un prêt de la banque.
He received a loan from the bank.
The word 'prête' is from the verb 'prêter', meaning 'to lend', conjugated here in the imperative form.