What is the meaning of "snuggled up warm" in the following sentence,
We were all cosy, snuggled up warm
Does it mean "We were all cosy and we snuggled up and we were warm" ? or does it mean "We were all cosy and we snuggled up in order to be warm" ?
Can we use the adjective "warm" instead of a noun behind the preposition "up"?
Grammatically, I have thought nouns came after prepositions. But, I often have seen many sentences with adjectives after prepositions. Is there a rule to make a sentence like this?