十八番

Proper noun

 * 1) the 18 great plays of kabuki

Etymology 2
Literally "a box", the kanji used to write it mean "number 18". From the fact that the Ichikawa family of kabuki performers would store their kabuki jūhachiban scripts in a box.

Noun

 * 1) a special talent or skill that one is good at
 * 2) an act or expression that one often does