What does "tomato sauce" mean?

A thick sauce made from tomatoes for pasta etc.

What is a synonym for "tomato sauce"?

Common synonyms include: catsup.

noun

noun ·Rare ·Advanced level

Noun

1
A thick sauce made from tomatoes for pasta etc. uncountable, usually
"Russian Tomato Sauce will keep, tightly covered, in the refrigerator for 10 days."
2
sauce made with a puree of tomatoes (or strained tomatoes) with savory vegetables and other seasonings; can be used on pasta wordnet
3
Tomato ketchup, used as a condiment. Australia, Brunei, India, Malaysia, Myanmar, New-Zealand, Pakistan, Singapore, South-Africa, UK, uncountable, usually
"A plastic tomato sauce bottle, which could have been cut in half to make a flower pot, was quickly surveyed along with other trophies, and received the death sentence. “In the bin, Bob.”"

"Russian Tomato Sauce will keep, tightly covered, in the refrigerator for 10 days."