山やまを当あてる

expression, ichidan verb

make a lucky hit; guess right; anticipate correctly

Idiomatic expression for guessing or predicting something correctly, often against the odds or when the outcome is uncertain. Commonly used in contexts like exams, contests, or speculative decisions.

See also: 山

• 試し験けんで山やまを当あてて、いい点てんが取とれた。

  I guessed the exam questions right and got a good score.

• 彼かれの予よ想そうが山やまを当あてて、株かぶで儲もうけた。

  His prediction hit the mark and he made money in stocks.

expression, ichidan verb

strike a vein of ore

Original literal meaning in mining: to successfully find a mineral vein. Now largely replaced by the figurative sense, but still understood in historical or mining contexts.

• 昔むかし、この山やまで金きん鉱こうを山やまを当あてたという記き録ろくがある。

  There is a record that they struck a gold vein in this mountain long ago.