chair
名词 chair:
a seat for one person, with a support for the back
the position of professor
同义词:professorship
the officer who presides at the meetings of an organization
同义词:president, chairman, chairwoman, chairperson
an instrument of execution by electrocution; resembles an ordinary seat for one person
同义词:electric chair, death chair, hot seat
动词 chair:
act or preside as chair, as of an academic department in a university
同义词:chairman
preside over