ichidan verb, transitive verb
find after searching; locate; track down
Emphasizes the effort of searching thoroughly before finally finding something. Often used when the search is difficult or the object is hard to locate.
何時間もかけて、やっと彼の住所を探し当てた。
After spending hours, I finally tracked down his address.
図書館でその本を探し当てるのに苦労した。
I had a hard time locating that book in the library.