(~s)
Frequency: The word is one of the 3000 most common words in English.
1.
A ~ is an experienced doctor with a high position, who specializes in one area of medicine. (mainly BRIT; in AM, usually use specialist )
Shirley’s brother is now a ~ heart surgeon in Sweden.
N-COUNT: oft N n
2.
A ~ is a person who gives expert advice to a person or organization on a particular subject.
...a team of management ~s sent in to reorganise the department.
N-COUNT: oft N to n, supp N