GCIDE(0.00 / 0 votes)Rate this definition: 1  Hump(n.) (Railroad) a portion of a switchyard with a slanting track in which freight cars may coast without an engine and be sorted through a series of switches. 2  Hump(v. t.) (Railroad) to sort freight cars by means of a hump.
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Re: Quicksilver 270.. the Sevylor inflatable fish boat is PVC as well and they sell patch kits for those at Bass Pro (I know for sure - that is where I got mine at). Amazon.com will have them also and Dicks Sporting goods caries Sevylors so they may have the repair kit also.