3 [C] ~ (about sth) an opinion or a belief about sth: He has some very strange ideas about education.
©Oxford University Press, 2005.
4 an opinion or belief • He's got the idea that no one likes him.http://www.chambersharrap.co.uk/chambers/feat...
belief/opinion[countable usually plural] someone's opinion or belief about something
She had some rather unusual ideas about raising children.
where did you get that idea? (=used to say that what someone thinks is completely wrong)
No, I'm not seeing Jane. Where did you get that idea?http://www.ldoceonline.com/dictionary/idea
An|sicht, die; -, -en: 1. Meinung, Überzeugung