noun
many waves; onrushing waves
Literary or poetic expression for countless waves or a surging sea. Not an everyday word; used in descriptive or elevated contexts.
千波万波が岩に打ち寄せる様子は壮観だ。
The sight of countless waves crashing against the rocks is magnificent.
A four-character compound combining 千 (thousand), 波 (wave), 万 (ten thousand), and 波 (wave), literally 'a thousand waves, ten thousand waves'. The exact historical derivation is uncertain; it is a conventional literary expression for innumerable waves.