Dictionary:

welcome

/ˈwɛlkəm/
/ˈwɛlkəm/
/ˈwɛlkəm/

noun

The act of greeting someone’s arrival, especially by saying "Welcome!"; reception.
    synonyms:
The utterance of such a greeting.
    synonyms:
Kind reception of a guest or newcomer.
We entered the house and found a ready welcome.
    synonyms:
The state of being a welcome guest.
    synonyms:

verb

To affirm or greet the arrival of someone, especially by saying "Welcome!".
    synonyms:
To accept something willingly or gladly.
We welcome suggestions for improvement.
    synonyms:

adjective

Whose arrival is a cause of joy; received with gladness; admitted willingly to the house, entertainment, or company.
Refugees welcome in London!
    synonyms:
Producing gladness.
a welcome present;  welcome news
    synonyms:
Free to have or enjoy gratuitously.
You are welcome to the use of my library.
    synonyms:

interjection

Greeting given upon someone's arrival.
    synonyms:
Ellipsis of you're welcome.
    synonyms: