(~s)
Frequency: The word is one of the 700 most common words in English.
1.
The ~ of a country that has no king or queen is the person who is the head of state of that country.
The White House says the ~ would veto the bill.
N-TITLE; N-COUNT: oft the N; N-VOC
2.
The ~ of an organization is the person who has the highest position in it.
...Alexandre de Merode, the ~ of the medical commission.
N-COUNT: usu N of n