Locker combinations refers to a string of numbers that are used to open a lock on a locker. It is a unique code that is meant to keep the contents of the locker secure and only accessible to the owner or authorized individuals. Full definition
Help your middle schooler build her recall skills, from locker combinations to schedules that can change daily. (scholastic.com)
Now we had to learn how to change classes, remember locker combinations and adjust to different teachers and to having homerooms. (religion-online.org)
Freshman year of high school, as nearly anyone can attest, is a lot to digest, from new locker combinations to lunchroom politics to catching the right bus and avoiding rowdy juniors. (utahpubliceducation.org)