invitation invitation /ˌɪnvɪˈteɪʃən/

noun

1. () A request (spoken or written) to participate or be present or take part in something  ( invitation )
   a request (spoken or written) to participate or be present or take part in something
    An invitation to lunch
   an invitation to lunch
    She threw the invitation away
   she threw the invitation away
   
2. A tempting allurement  ( invitation )
   a tempting allurement
    She was an invitation to trouble
   she was an invitation to trouble