a projecting, pipelike device on a receiving aircraft used to make connection with and receive fuel from a tanker aircraft during refueling in flight.
a device, attached by cord to an oven, that can be inserted into roasts or other food so that the oven shuts off when the desired internal temperature of the food is reached.
Biology. any identifiable substance that is used to detect, isolate, or identify another substance, as a labeled strand of DNA that hybridizes with its complementary RNA or a monoclonal antibody that combines with a specific protein.
1580, "instrument for exploring wounds, etc.," from M.L. proba "examination," in L.L. "test, proof," from L. probare (see prove). Meaning "act of probing" is 1890, from the verb; fig. sense of "penetrating investigation" is from 1903. Meaning "small, unmanned exploratory craft" is attested from 1953. The verb is first recorded 1649 (originally figurative; "to search thoroughly, interrogate"), from the noun.