一本やり
1
principio de guía;talento único de uno;unico talento propio;un principio de guía
1
sticking to one thing (method, principle, objective, etc.);never deviating from;persisting with;focusing solely on;devotion to;single spear
after a noun
2
one's sole talent;one's only forte
Other forms
一本槍 【いっぽんやり】