fathom
🇺🇸
/ˈfæðəm/
🇬🇧
/ˈfæðəm/
to really understand or figure out something
I can't fathom why she made that decision.
なぜ彼女がその決断を下したのか理解できない。
a measuring unit for the depth of water, which is 6 feet (about 1.8 meters) long
The lake is 20 fathoms deep at its deepest point.
その湖は最も深いところで20ファゾムの深さがあります。