noun
: a long usually glass tube that has a conical or bulging thistle-shaped top and sometimes a loop with or without bulbs serving as a safety trap and that is used especially in the chemical laboratory for pouring liquid into an apparatus
noun
: a long usually glass tube that has a conical or bulging thistle-shaped top and sometimes a loop with or without bulbs serving as a safety trap and that is used especially in the chemical laboratory for pouring liquid into an apparatus
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012