noun
drop of water; water droplet
General term for a small, roundish amount of water, such as a raindrop, a drip from a faucet, or condensation.
窓ガラスに水滴がついている。
There are water droplets on the window glass.
葉っぱの上で水滴がキラキラ光っている。
Water drops are sparkling on the leaf.
noun
water dropper for calligraphy
A small vessel used in traditional calligraphy to hold water for adding to an inkstone. This is a specialized tool, not a general water container.
書道をするときは、水滴で硯に水を足す。
When doing calligraphy, you add water to the inkstone with a water dropper.