Definition of ketchup noun from the Oxford Advanced American Dictionary

 

ketchup

 noun
(also catsup)noun
NAmE//ˈkɛtʃəp//
 
, NAmE//ˈkætʃəp//
 
[uncountable]
 
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a thick cold sauce made from tomatoes, usually sold in bottles
See the Oxford Advanced Learner's Dictionary entry: ketchup