Definition of backpack:
a bag carried by a strap on your back or shoulder
Synonyms of backpack:
back pack, haversack, knapsack, packsack, rucksack, satchel, travel bag, bag, handbag, briefcase
Opposite/Antonyms of backpack:
stay, wait, await, hang, hang on, remain, rest, linger
Sentence/Example of backpack:
The young man picked up his backpack, and together they walked out of the shul.