Английский словарь американских идиом - on the side

{adv. phr.}, {informal} 1. In addition to a main thing, amount or quantity; extra. * /He ordered a hamburger with onions and French fries on the side./ * /His job at the hospital did not pay much, so he found another on the side./ * /The cowboys in the rodeo competed for prize money and also made bets on the side./ 2. or