'Invitation' definitions:

Definition of 'invitation'

From: WordNet
noun
A request (spoken or written) to participate or be present or take part in something; "an invitation to lunch"; "she threw the invitation away"
noun
A tempting allurement; "she was an invitation to trouble"

Definition of 'Invitation'

From: GCIDE
  • Invitation \In`vi*ta"tion\, n. [L. invitatio: cf. F. invitation. See Invite.] [1913 Webster]
  • 1. The act of inviting; solicitation; the requesting of a person's company; as, an invitation to a party, to a dinner, or to visit a friend. [1913 Webster]
  • 2. A document written or printed, or spoken words, conveying the message by which one is invited. [1913 Webster]
  • 3. Allurement; enticement. [R.] [1913 Webster]
  • She gives the leer of invitation. --Shak. [1913 Webster]