#1 find out v. establish after a calculation, investigation, experiment, survey, or study; "find the product of two numbers"; "The physicist who found the elusive particle won the Nobel Prize". wn
#2 find out v. get to know or become aware of, usually accidentally; "I learned that she has two grown-up children"; "I see that you have been promoted". wn
#3 find out v. find out, learn, or determine with certainty, usually by making an inquiry or other effort; "I want to see whether she speaks French"; "See whether it works"; "find out if he speaks Russian"; "Check whether the train leaves on time". wn
#4 find out v. trap; especially in an error or in a reprehensible act; "He was caught out"; "She was found out when she tried to cash the stolen checks". wn
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