Bottle/ˈbɑːtl/ Definition 1 of 5Pro Tip 1/3Physical Shape Think of 'bottle' as usually being taller than it is wide, with a narrow opening. Can you pass me that bottle with the blue cap? Pro Tip 2/3Material Variance Bottles can be made from different materials, like plastic, glass, or metal. I prefer using a stainless steel water bottle. Pro Tip 3/3Sealable Top Bottles are expected to have some form of a sealable top or cap. Make sure the bottle’s lid is tight so it doesn’t leak.