Color symbolism is the use of color as a representation or meaning of something that is usually specific to a particular culture or society. Context, culture and time are certainly important factors to consider when thinking about color symbolism.
Definition of backpack for English Language Learners. : a bag for carrying things that has two shoulder straps and is carried on the back.
: one of a pair of covered pouches laid across the back of a horse behind the saddle or hanging over the rear wheel of a bicycle or motorcycle. 2. : a bulge of lumpy fat in the outer area of the upper thighs. See saddlebag defined for English-language learners. See saddlebag defined for kids.