definition of
think

[1] #1 think v. [believe, consider, conceive] judge or regard; look upon; judge; "I think he is very smart"; "I believe her to be very smart"; "I think that he is her boyfriend"; "The racist conceives such people to be inferior". wn

[2] #2 think v. [opine, suppose, imagine, reckon, guess] expect, believe, or suppose; "I imagine she earned a lot of money with her new novel"; "I thought to find her in a bad state"; "he didn't think to find her in the kitchen"; "I guess she is angry at me for standing her up". wn

[3] #3 think v. [cogitate, cerebrate] use or exercise the mind or one's power of reason in order to make inferences, decisions, or arrive at a solution or judgments; "I've been thinking all day and getting nowhere". wn

[4] #4 think v. [remember, retrieve, recall, call back, call up, recollect] recall knowledge from memory; have a recollection; "I can't remember saying any such thing"; "I can't think what her last name was"; "can you remember her phone number?"; "Do you remember that he once loved you?"; "call up memories". wn

[5] #5 think v. imagine or visualize; "Just think--you could be rich one day!"; "Think what a scene it must have been!". wn