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general::
Phrase(s): nuzzle up against someone or something [and] nuzzle up (to someone or something)
[for an animal] to rub its nose against someone or something; to rub against someone or something, softly, in the manner of rubbing the nose against someone or something; to snuggle up to someone or something. (Nuzzle is related to nose.) • The dog nuzzled up against my leg, wanting to be friends. • The dog nuzzled up to me and licked my hand.
McGrawhill's American Idioms And Phrasal Verbs