How do you spell Lambed

Available Definitions:
1)  n. - The young of the sheep.
2)  n. - Any person who is as innocent or gentle as a lamb.
3)  n. - A simple, unsophisticated person; in the cant of the Stock Exchange, one who ignorantly speculates and is victimized.
4)  v. i. - To bring forth a lamb or lambs, as sheep.