/bæɡ/
N-COUNT A ~ is a container made of thin paper or plastic, for example, one that is used in stores to put things in that a customer has bought.
Pack your bag for school/work before you go to bed.
If you're putting a soda (or beer, etc.) in the freezer to quickly cool it, put it in a large zip-top bag.
Evacuating and worried if your freezer kept your food safe? Put an ice cube in a zip-loc bag and keep it in the freezer. If the ice melts and refreezes it will be misshapen indicating a thawing.
When you get a new bag of zip ties (cable ties) cut (or rip) a hole in the center of the bag not the end. This will prevent any zip ties from falling out in any condition.