What is "welcome-to-our-house"

Welcome \Wel"come\, a. [OE. welcome, welcume, wilcume, AS. wilcuma a welcome guest, from wil-, as a prefix, akin to willa will + cuma a comer, fr. cuman to come; hence, properly, one who comes so as to please another's will; cf. Icel. velkominn welcome, G. willkommen. See Will, n., and Come.]

1. Received with gladness; admitted willingly to the house, entertainment, or company; as, a welcome visitor.

   When the glad soul is made Heaven's welcome guest.
   --Cowper.

2. Producing gladness; grateful; as, a welcome present; welcome news. ``O, welcome hour!''
   --Milton.

3. Free to have or enjoy gratuitously; as, you are welcome to the use of my library.

   Note: Welcome is used elliptically for you are welcome. ``Welcome, great monarch, to your own.''
   --Dryden.

   Welcome-to-our-house (Bot.), a kind of spurge ( Euphorbia Cyparissias).
   --Dr. Prior.