It's a piece of glassware used for handling liquids, usually in a laboratory, although I use one as a coffee cup.
They have markings on the side, like a kitchen measuring cup, so you can measure different amounts of liquid, and they have a lip for pouring.
They're also usually made of a special type of glass (borosilicate) so that they won't crack when very hot liquids are poured in.
Here's a picture of a beaker with 200 milliliters of some blue stuff in it.
it looks like a bottle with a pointed tip
A beaker is a glass container used in laboratories for mixing, heating, and holding liquids, marked with volume graduations. They are made from materials that can withstand high temperatures and come in various sizes. Beakers are essential tools in experiments where accuracy in liquid handling is needed.
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