Plural of chaise, a long chair or sofa for reclining, often a chaise lounge.
From French 'chaise' meaning 'chair,' derived from Latin 'cathedra.' In English, 'chaise lounge' became popular as a furniture term in the 18th century, blending French 'chaise' with English 'lounge.'
The term 'chaise lounge' is actually a humorous English-French mix-up—'chaise' already means 'chair' in French, so 'chaise lounge' literally translates to 'chair lounge,' which is redundantly perfect.
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