early 14c., "type of cask, large storage container;" mid-14c., "large vessel for storing wine," from Old French pipe "liquid measure, cask for wine," from a special use of Vulgar Latin *pipa "a pipe" (see pipe (n.1)).
1832, "any thing which radiates," agent noun in Latin form from radiate (v.). Originally a stove-like apparatus, as a device designed to communicate heat from steam to a room by 1855; the sense of "cooling device in an internal combustion engine" is by 1899.
1896, "science or process of making images of objects on a sensitive plate by means of x-rays," from radiograph, the word for such an image-making device; from radio-, combining form of radiation, + -graph. Radiograph was used earlier as "device to measure and record the intensity of sunshine" (1880).
ancient Inca recording device using knotted cords, 1704, from Quechua (Inca) quipu "knot."
late 15c. (Caxton), "vessel, etc., for storage," from French repositoire or directly from Late Latin repositorium "store," in classical Latin, "a stand on which food is placed," from noun use of repositus, past participle of reponere "put away, store" (see repose (v.2)).
The figurative sense of "place where anything immaterial is thought of as stored" is recorded from 1640s; commercial sense of "place where things are kept for sale" is by 1759.