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pac-a-mac

(British) A lightweight rainjacket that can be compressed into a small pocket-sized bag.

ˈpeɪkˌmɑkDocumented since 1940s1940sBoomerhistorical133 viewsLast reviewed Jun 29, 2026+ Add a definition
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Born ~1949 · no dated citations yet
1949BornToday, 2026

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UK
#1·Apr 27, 2026UK

(British) A lightweight rainjacket that can be compressed into a small pocket-sized bag.

And there she was - wearing a dark blue pac-a-mac over a blue brushed-nylon nightdress, topped off with a hairnet. It was as though Death itself had just walked into the kitchen. She always wore the pac-a-mac because a dressing gown woul…
Origin: Originally a brand name coined in 1949 as a shortening of "pack a macintosh". Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
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