Word Study
eiderdown
OXFORD DICTIONARY
eiderdown, n. a quilt stuffed with down (orig. from the eider) or some other soft material, esp. as the upper layer of bedclothes.
THESAURUS
eiderdown
afghan, bed linen, bedclothes, bedcover, bedding, bedsheet, bedspread, blanket, blubber, breeze, buffalo robe, butter, case, clay, clothes, comfort, comforter, contour sheet, counterpane, cover, coverlet, coverlid, cushion, dough, down, feather bed, feathers, fitted sheet, fleece, floss, flue, fluff, foam, fur, fuzz, kapok, lap robe, linen, lint, patchwork quilt, pile, pillow, pillow slip, pillowcase, plush, pudding, puff, putty, quilt, robe, rubber, rug, satin, sheet, sheeting, silk, slip, spread, swansdown, thistledown, velvet, wax, wool, zephyrROGET THESAURUS
eiderdown
Covering
N covering, cover, baldachin, baldachino, baldaquin, canopy, tilt, awning, tent, marquee, tente d'abri, umbrella, parasol, sunshade, veil (shade), shield, roof, ceiling, thatch, tile, pantile, pentile, tiling, slates, slating, leads, barrack, plafond, planchment, tiling, shed, top, lid, covercle, door, operculum, bulkhead, bandage, plaster, lint, wrapping, dossil, finger stall, coverlet, counterpane, sheet, quilt, tarpaulin, blanket, rug, drugget, housing, antimacassar, eiderdown, numdah, pillowcase, pillowslip, linoleum, saddle cloth, blanket cloth, tidy, tilpah, apishamore, integument, tegument, skin, pellicle, fleece, fell, fur, leather, shagreen, hide, pelt, peltry, cordwain, derm, robe, buffalo robe, cuticle, scarfskin, epidermis, clothing, mask, peel, crust, bark, rind, cortex, husk, shell, coat, eggshell, glume, capsule, sheath, sheathing, pod, cod, casing, case, theca, elytron, elytrum, involucrum, wrapping, wrapper, envelope, vesicle, corn husk, corn shuck, dermatology, conchology, testaceology, inunction, incrustation, superimposition, superposition, obduction, scale, veneer, facing, overlay, plate, silver plate, gold plate, copper plate, engobe, ormolu, Sheffield plate, pavement, coating, paint, varnish, plating, barrel plating, anointing, enamel, epitaxial deposition, vapor deposition, ground, whitewash, plaster, spackel, stucco, compo, cerement, ointment, covering, superimposed, overlaid, plated, cutaneous, dermal, cortical, cuticular, tegumentary, skinny, scaly, squamous, covered, imbricated, loricated, armor plated, ironclad, under cover, cowled, cucullate, dermatoid, encuirassed, hooded, squamiferous, tectiform, vaginate.For further exploring for "eiderdown" in Webster Dictionary Online