special interest noun
plural ∼ -ests [count] chiefly US : a group that tries to influence the people who run a government in order to help a particular business, cause, industry, etc. — often plural ▪ The congressmen were accused of selling out to special interests. ▪ contributions made by special interests — often used before another noun ▪ special interest money/politics ▪ the influence of special interest groups
