אָלַף

From LSJ

ἐγγυητής τοῦ ἀργυρίου ἀξιόχρεωςtrustworthy guarantor for the money

Source

English (Strong)

a primitive root, to associate with; hence, to learn (and causatively to teach): learn, teach, utter.
denominative from אָ֫לֶפ; causative, to make a thousandfold: bring forth thousands.