Does anybody know what a plinth is?

An empty thing in Trafalgar Square? Big square bit at the bottom of a statue or column?

1. A block or slab on which a pedestal, column, or statue is placed.
2. The base block at the intersection of the baseboard and the vertical trim around an opening.
3. A continuous course of stones supporting a wall. Also called plinth course.
4. A square base, as for a vase.

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Thanks for the answers guys, but I've been reliably informed that it's a bloke married to a plinthess!

ha ha ha ha.