1[countable]a piece of furniture for one person to sit on, with a back, a seat and four legsa table and chairsSit on your chair!an old man asleep in a chair (= an armchair )dining/kitchen chairs see also armchair, deckchair, easy chair, high chair, musical chairs, rocking chair, wheelchair2the chair[singular]the position of being in charge of a meeting or committee; the person who holds this positionShe takes the chair in all our meetings.Who is in the chair today?He was elected chair of the city council.All remarks should be addressed to the chair.3[countable]the position of being in charge of a department in a universityHe holds the chair of philosophy at Oxford.4the chair[singular] (US, informal) = the electric chair