familiar in WordNet English dictionary

1. a friend who is frequently in the company of another
   "drinking companions"; "comrades in arms"
   companion  comrade  fellow  familiar  associate 
   
2. a spirit (usually in animal form) that acts as an assistant to a witch or wizard
   familiar  familiar spirit 
   
3. a person attached to the household of a high official (as a pope or bishop) who renders service in return for support
   familiar 
   

1. (usually followed by `with') well informed about or knowing thoroughly
   "conversant with business trends"; "familiar with the complex machinery"; "he was familiar with those roads"
   conversant  familiar 
   
2. well known or easily recognized
   "a familiar figure"; "familiar songs"; "familiar guests"
   familiar 
   
3. within normal everyday experience; common and ordinary; not strange
   "familiar ordinary objects found in every home"; "a familiar everyday scene"; "a familiar excuse"; "a day like any other filled with familiar duties and experiences"
   familiar 
   
4. having mutual interests or affections; of established friendship
   "on familiar terms"; "pretending she is on an intimate footing with those she slanders"
   familiar  intimate