What is the meaning of Dator?

third-person singular, present indicative of etorri (“to come”)

computer

Someone who gives; a giver, donor or patron

a slave who hands the player the ball

second/third-person singular future passive imperative of dō

indebted (to)

obliged (to)

owing money

a computer (data processing machine)

indefinite plural of data

Source: wiktionary.org