Learner's definition of GUEST
1 : a person who is invited to visit or stay in someone's home 2 : a person who is invited to a place or an event as a special honor
Only invited guests are allowed inside the banquet hall.
He played at the country club as a guest of one of the members.
She will be the guest of honor [=the person who is being specially honored] at the annual banquet.
He was the guest speaker [=a person invited to a gathering to give a speech] at the awards ceremony.
The guest list [=the list of people who are being invited] for the party is getting long.
3 : a customer at a hotel, restaurant, etc.
Our guests receive the finest quality service.
Frequent guests receive a discount.
Paying guests [=guests who have paid to stay in or use something] may use the fitness room.
4 : a usually well-known person who is invited to appear or perform on a program, at an event, etc.— often used before another noun
be my guest
— used in speech to say that someone is welcome to do or take something