pea jacket

American  

noun

1. a short coat of thick wool, usually double-breasted and navy in color, worn by seamen, fishermen, etc.

2. a jacket or short coat styled like this, worn by adults and children.

---

pea jacket British  

/ ˈpiːˌkəʊt /

noun

1. a sailor's short heavy double-breasted overcoat of navy wool

---

Etymology

Origin of pea jacket

1715–25, pea, variant spelling of pay, pee, pie coat of coarse woolen cloth ( late Middle English pee, pey, pie; akin to Dutch pij, dialectal Frisian pey, dialectal Swedish paje ) + jacket; perhaps modeled on Frisian (N dial.) pijekkat