snug ‧ gle /ˈsnʌɡ ə l/ BrE AmE verb [intransitive always + adverb/preposition] informal
[ Date: 1600-1700 ; Origin: snug 'to snuggle' (16-20 centuries) , probably from snug (adjective) ]
to settle into a warm comfortable position
snuggle up/down/against etc
She snuggled up in Lea's lap to listen to the story.