—n. a bag filled with sand for use:
1 (in fortification) for making temporary defences or for the protection of a building etc. against blast and splinters or floodwaters.
2 as ballast esp. for a boat or balloon.
3 as a weapon to inflict a heavy blow without leaving a mark.
4 to stop a draught from a window or door.
—v.tr. (-bagged, -bagging)
1 barricade or defend.
2 place sandbags against (a window, chink, etc.).
3 fell with a blow from a sandbag.
4 US coerce by harsh means.
Derivatives:
sandbagger n.
Useful english dictionary. 2012.