in chargeB1being the person who has control of or is responsible for someone or something: Who will be in charge of the department when Sophie leaves?I left Jack in charge of the suitcases while I went to get the tickets.Duty, obligation and responsibilityB2[U]responsibility for controlling or caring for something: Her ex-husband has charge of the children during the week and she has them at the weekend.His boss asked him to take charge of the office for a few days while she was away.Duty, obligation and responsibility›[C]old-fashioneda person, especially a child, who is in your care and who you are responsible forDuty, obligation and responsibility