sacksacksacks1nouna big strong bag for carrying heavy things: a sack of potatoesget the sack (British, informal) to lose your job: She got the sack for being late.give somebody the sack (British, informal) to say that somebody must leave their job: Tony's work wasn't good enough and he was given the sack.sacksacksackssackedsacking2verb (sacks, sacking, sacked)to say that somebody must leave their job: The manager sacked her because she was always late.