Bag n. : A sack or pouch, used for holding anything; as, a bag of meal or of money.

Bag n. : A sac, or dependent gland, in animal bodies, containing some fluid or other substance; as, the bag of poison in the mouth of some serpents; the bag of a cow.

Bag n. : A sort of silken purse formerly tied about men's hair behind, by way of ornament.

Bag n. : The quantity of game bagged.

Bag n. : A certain quantity of a commodity, such as it is customary to carry to market in a sack; as, a bag of pepper or hops; a bag of coffee.

Bag v. t. : To put into a bag; as, to bag hops.

Bag v. t. : To seize, capture, or entrap; as, to bag an army; to bag game.

Bag v. t. : To furnish or load with a bag or with a well filled bag.

Bag v. i. : To swell or hang down like a full bag; as, the skin bags from containing morbid matter.

Bag v. i. : To swell with arrogance.

Bag v. i. : To become pregnant.

Example:
What size Bag did you pack for the hospital when pregnant?

Taxonomy
Paper bag, free encyclopedia, shop, Bags, shopping bags, fabric bags, Knight, Volume 4, shoulder, over the shoulder, trash bags, purse, search, German military, bread, non-rigid, semi-rigid, rigid container.

Defination from the web:
bag (also known as a sack) is a non-rigid mostly semi-rigid container, made of paper, cloth, plastic, leather, or some other flexible material. ... There is also be a string bag, with two strings which go over the shoulder and can be used as the fastening as well. ...