Bedding

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Old English bed, bedd (noun), beddian (verb), of Germanic origin; related to Dutch bed and German Bett .

wiktionary

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From Middle English bedding, beddyng, from Old English bedding(“bedding”), equivalent to bed +‎ -ing.

From bed +‎ -ing.

etymonline

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bedding (n.)

late Old English beddinge "materials of a bed, bed covering," from bed (n.). Meaning "bottom layer of anything" is from c. 1400.