Benkei
Strong Person
noun, proper noun
You should congratulate a person who speaks lots of dialects because they have to be a really strong person, just like Mr. Benkei was. You think learning Japanese is hard now, just wait till you hear Osaka-ben and Hokkaido-ben. It takes a really strong person — a Benkei — to learn all those dialects, so congratulate them and tell them how strong they are!
弁慶 is the name of a Japanese historical figure who was really strong, so Benkei is the Japanese equivalent of Hercules or Achilles in Western languages.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
弁慶と牛若丸は清水寺で戦いました。
Benkei and Ushiwakamaru fought at Kiyomizu Temple.
家では威張っているが、外では従順になる人のことを「内弁慶」と言う。
A person who is arrogant at home but submissive outside the home is called an "uchi-benkei".
むこうずねは、ぶつけると弁慶ほど強い人でも涙を流すほど痛いことから、「弁慶の泣き所」といわれています。
The shin is known as "Benkei's weeping spot" because, if you hit it, it hurts so much that even someone as strong as Benkei would shed tears.