Definition of knew
be aware of through observation, inquiry, or information.
Governments know from experience that struggling companies typically can't be rescued with taxpayer money.
have developed a relationship with (someone) through meeting and spending time with them; be familiar or friendly with.
Those of you who know me realise that I have a great respect for our nurses who do a hell of a lot for very little.
have sexual intercourse with (someone).
The angel tells Mary (a woman who has known no man) that she will bear a son.