from The American Heritage® Dictionary of the English Language, 4th Edition
- adv. On the shoulders or back: ride piggyback; a piggyback ride.
- adv. By or relating to a method of transportation in which truck trailers are carried on trains, or cars on specially designed trucks.
- adv. In connection with something larger or more important: a tariff provision that came piggyback with the tax bill; a piggyback provision to a new piece of legislation.
- n. The act of transporting piggyback.
- transitive v. To cause to be aligned with an issue, for example, that is larger or more important: "a $21.5-million federal grant to piggyback city and state subsidies” ( New York).
- intransitive v. To function as if carried on the back of another: "This reagent will piggyback onto an enzyme” ( Seth Rolbein).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. On somebody's back or shoulders.
- adv. On somebody's back or shoulders.
- v. To attach or append something to another (usually larger) object or event.
- v. To obtain a wireless internet connection by bringing one's own computer within the range of another's wireless connection without that subscriber's permission or knowledge.
- v. Utilizing last mile wiring (not wireless slang) rented from a larger owner ISP by a smaller ISP, last milers are obligated to sell to competitors in places like Canada.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. haul truck trailers loaded with commodities on railroad cars
- v. haul by railroad car
- v. ride on someone's shoulders or back
- v. support on the back and shoulders
- adv. on the back or shoulder or astraddle on the hip
- n. the act of carrying something piggyback
- adv. on a railroad flatcar
- v. bring into alignment with
Alteration of dialectal pig back, alteration of pickaback, pickback, pick pack : probably dialectal pick, to throw (variant of pitch2) + back1 or pack1.(American Heritage® Dictionary of the English Language, Fourth Edition)
A corruption of pickaback, itself a corruption of pick-pack, like a pack. (Wiktionary)