noun [ usually pl. ]
1.
an extra and usually bad effect that a drug has on you, as well as curing illness or pain
2.
an unexpected result of a situation or course of action that happens as well as the result you were aiming for
noun [ usually pl. ]
1.
an extra and usually bad effect that a drug has on you, as well as curing illness or pain
2.
an unexpected result of a situation or course of action that happens as well as the result you were aiming for
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005