laboratory flask
Refers specifically to glass flasks used in scientific laboratories, such as Erlenmeyer or round-bottom flasks.
from Portuguese frasco
実験では、フラスコに溶液を入れて加熱した。
In the experiment, we put the solution into a flask and heated it.
I put water into the flask and heated it.
During the experiment, I shook the flask well.
We observed a chemical reaction in the flask.