to laugh at someone and make jokes in order to have fun by embarrassing them, either in a friendly way or in an unkind way:
laugh[intransitive and transitive]
Don't get upset. I was only teasing.
He used to tease her mercilessly.
tease somebody about something
She used to tease me about my hair.
to deliberately annoy an animal:
annoy an animal[transitive]
Stop teasing the cat!
to deliberately make someone sexually excited without intending to have sex with them, in a way that seems unkind
sex[intransitive and transitive]
to comb your hair in the opposite direction to which it grows, so that it looks thicker [= backcomb British English]
hair[transitive] American EnglishDCB
tease something ↔ outphrasal verb
to succeed in learning information that is hidden, or that someone does not want to tell you
tease something ↔ out of
I finally managed to tease the truth out of her.
to gently move hairs or threads that are stuck together so that they become loose or straight again:
She combed her hair, gently teasing out the knots.