ketch ‧ up /ˈketʃəp/ BrE AmE ( also catsup American English ) noun [uncountable]
[ Date: 1600-1700 ; Language: Malay ; Origin: kechap 'hot-tasting fish sauce' ]
a thick cold red sauce made from ↑ tomato es that you put on food:
a bottle of tomato ketchup