One of the mysteries of the English language finally explained.
A padded jacket or jerkin worn under armour for protection.
Middle English. From Anglo-Norman aketoun, aketon, aketun, aketoune, aketune, actone, Anglo-Norman and Old French auqueton from Spanish † alcoton cotton or its etymon Spanish Arabic al-quṭūn cotton, regional variant of classical Arabic al-quṭn from al the + quṭn. Compare Old Occitan aucoton, alcoto padded military tunic (Occitan auqueton child's jerkin).
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