一いっ発ぱつ大おお波なみ

noun

rogue wave; freak wave

A single, unexpectedly large ocean wave that can be dangerous to ships. Often used in maritime and surfing contexts. The term フリーク波 is a synonym.

See also: フリーク波

• 一いっ発ぱつ大おお波なみは突とつ然ぜん現あらわれ、船ふねを襲おそうことがある。

  Rogue waves can appear suddenly and strike ships.

• サーファーは一いっ発ぱつ大おお波なみを求もとめて沖おきへ出でた。

  The surfer went offshore in search of a freak wave.