Shore \Shore\, v. t. [imp. & p. p. Shored; p. pr. & vb. n. Shoring.] [OE. schoren. See Shore a prop.] To support by a shore or shores; to prop; -- usually with up; as, to shore up a building.
Source: Webster's Revised Unabridged Dictionary (1913)
Shoring \Shor"ing\, n.1. The act of supporting or strengthening with a prop or shore.
2. A system of props; props, collectively.