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ketch·up (kĕch́əp, kăch́-),
also catch·up (kăch́əp, kĕch́-)
or cat·sup (kăt́səp, kăch́əp, kĕch́-)

[Probably Malay kicap, fish sauce, possibly from Chinese (Cantonese) kē-chap, equivalent to Chinese (Mandarin) qié, eggplant, + Chinese (Mandarin) zhī, sap, gravy.]

noun 

A condiment consisting of a thick, smooth-textured, spicy sauce usually made from tomatoes.