Definition of: respond

(ri·spond′) v.i.
1. To give an answer; reply.
2. To act in reply or return.
3. Law To be liable or answerable.
—v.t.
4. To say in answer; reply.
—noun Archit. A pilaster, semi column, or similar feature placed against a wall, to receive an arch. [<L respondere give back in return <re- back + spondere pledge, promise]
—re·spond′er noun