bedchamber (n.)

Old English bedd "bed, couch, resting place; garden plot," from Proto-Germanic *badja- "sleeping place dug in the ground" (source also of Old Frisian, Old Saxon bed, Middle Dutch bedde, Old Norse beðr, Old High German betti, German Bett, Gothic badi "bed"), sometimes said to be from PIE root *bhedh- "to dig, pierce" (source also of Hittite beda- "to pierce, prick," Greek bothyros "pit," Latin fossa "ditch," Lithuanian bedu, besti "to dig," Breton bez "grave"). But Boutkan doubts this and writes, "there is little reason to assume that the Gmc. peoples (still) lived under such primitive circumstances that they dug out their places to sleep."

Both the sleeping and gardening senses are found in Old English; the specific application to planting is found also in Middle High German and is the only sense of Danish bed. Meaning "bottom of a lake, sea, or watercourse" is from 1580s. Geological sense of "a thick layer, stratum" is from 1680s.

Bed and board "in bed and at the table" (early 13c.) was a term in old law applied to conjugal duties of man and wife; it also could mean "meals and lodging, room and board" (mid-15c.). Bed-and-breakfast in reference to overnight accommodations is from 1838; as a noun, in reference to a place offering such, by 1967.

c. 1200, "a room in a house," usually a private one, from Old French chambre "room, chamber, apartment" (11c.), from Late Latin camera "a chamber, room" (see camera).

The Old French word and the Middle English one also were used alone and in combinations to form words for "latrine, privy" from the notion of "bedroom utensil for containing urine." In anatomy, "enclosed space in a body," from late 14c. Of machinery, "artificial cavity," from 1769. Gunnery sense "part of the bore in which the charge is placed" is from 1620s. Meaning "legislative body" is from c. 1400, an extended sense from the chambers or rooms where an assembly meets. Chamber music (1765) traditionally was that meant to be performed in smaller spaces.

DA CAMERA: of the chamber, i. e. belonging to the chamber, suitable for the chamber, designed for the chamber,—a term applied to parlor or chamber music. [Godfrey Weber's General Music Teacher," Boston, 1842]