also: でんきくらげ
Portuguese man-of-war
Colloquial name for the Portuguese man-of-war, a marine hydrozoan known for its painful sting. The literal meaning is 'electric jellyfish'.
See also: カツオノエボシ
A Portuguese man-of-war had washed up on the beach.
I hear it's very painful if you get stung by a Portuguese man-of-war.