Английский словарь американских идиом - square peg in a round hole

{n.}, {informal} A person who does not fit into a job or position; someone who does not belong where he is. * /Arthur is a square peg in a round hole when he is playing ball./ * /George likes to work with his hands. When it comes to books, he's a square peg in a round hole./ - Sometimes used in a short form, square peg .