名詞 knockabout:

1. a sloop with a simplified rig and no bowsprit

形容詞 knockabout:

1. full of rough and exuberant animal spirits
   同義詞：boisterous
2. suitable for rough use

knock.a.bout

adj.（形容詞）
Boisterous; rowdy.
喧鬧的；吵鬧的
Appropriate for rough wear or use:
樸素的，粗陋的：適合于便穿的或粗用的：
例句：
a knockabout overcoat.
一件粗陋的外套

n.Nautical （名詞）【航?！?/i>
A small sloop with a mainsail, jib, and keel but no bowsprit.
單桅帆船：有一個主帆、三角帆和龍骨但沒有船首斜桁的單桅小帆船