Definition of cuddle verb from the Oxford Advanced Learner's Dictionary

cuddle

verb
ˈkʌdl
 
; ˈkʌdl
 
 
[intransitive, transitive] to hold somebody/something close in your arms to show love or affection
Synonym
hug
A couple of teenagers were kissing and cuddling on the doorstep.cuddle something (+ adjective) The little boy cuddled the teddy bear close.
Phrasal verbs

cuddle up (to/against somebody/something)

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cuddle up (together)

to sit or lie very close to somebody/somethingShe cuddled up against him.We cuddled up together under the blanket.