Definition of they'll in English:
They shall; they will.
- Dancers, the globe over, need dancing partners and so if you can dance, they'll find you.
- Naturally, they reserve the right to be smug and unimpressed, but still they'll come.
- If people want a job with you, then they'll approach you, and that's what has happened here.
Definition of they'll in:
- British & World English dictionary