This is the verse translation, not a definition of the individual word.
It is not righteousness to turn your faces towards the east or the west, but righteousness is to believe in Allah, the Last Day, the angels, the Scriptures, and the prophets; and to give charity out of one’s cherished wealth to relatives, orphans, the needy, the wayfarer, beggars, and to free slaves; to establish prayer and give zakah; to fulfill the ratified pledges; to be patient at times of hardship, adversity, and during the battle. Such are the true believers, and such are the righteous.