broad in the beam

Adjective

of a ship idiomatic of a person

Japanese Meaning

航海用語として：船体が幅広い（つまり、船の胴体が広い状態） / 俗語または比喩的表現として：特に女性に対し、ヒップや尻が広く、丸みを帯びた形状であること

The coastal trader was broad in the beam, which allowed her to carry heavy cargo without becoming unstable.

その沿岸交易船は船幅が広く、そのため重い貨物を積んでも不安定にならなかった。

Sense（1）

(nautical, of a ship) Wide across the hull.

"Ah! She's not that old green launch with a yellow line, very broad in the beam?"

Sense（2）

(idiomatic, of a person, especially a female) Wide across the hips, with large buttocks.