From Longman Dictionary of Contemporary Englishsomebody’s line managersomebody’s line managerBBBsomeone who is one level higher in rank than you in a company and is in charge of your work → line manager
Examples from the Corpus
somebody’s line manager• All these convey an organisational unit headed by a line manager.• One passionate advocate of appraisals is Canon Hardaker, whose lucid guidelines should be compulsory reading for many a line manager.• Your line manager will also discuss and agree realistic objectives with you. 