This is the verse translation, not a definition of the individual word.
O you who believe, stand up for justice as witnesses for Allah[1], even against yourselves or parents and relatives. Whether one is rich or poor, Allah takes the best care of both. So do not let your desires cause you to swerve from justice. If you distort your testimony or refuse to give it, then Allah is indeed All-Aware of what you do.
Source
[1] Giving testimony should only be meant to please Allah.