1) Bases for vases 2) Bases of columns 3) Bust supports 4) Column bases 5) Heavy bases under statues 6) Square pedestal bases 7) Statue bases 8) Supports for columns Found on https://www.crosswordclues.com/clue/plinths
The lower square part of the base of a column. A square base or a lower block as of a pedestal. The base block at the juncture of baseboard and trim around an opening. Found on https://www.encyclo.co.uk/local/22191