What does "slice" mean?

Slice: That which is thin and broad, like a slice. Specifically: (a) A broad, thin piece of plaster. (b) A salver, platter, or tray. [Obs.] (c) A knife with a thin, broad blade for taking up or serving fish; also, a spatula for spreading anything, as paint or ink. (d) A plate of iron with a handle, forming a kind of chisel, or a spadelike implement, variously proportioned, and used for various purposes, as for stripping the planking from a vessel's side, for cutting blubber from a whale, or for stirring a fire of coals; a slice bar; a peel; a fire shovel. [Cant] (e) (Shipbuilding) One of the wedges by which the cradle and the ship are lifted clear of the building blocks to prepare for launching. (f) (Printing) A removable sliding bottom to galley. Slice bar, a kind of fire iron resembling a poker, with a broad, flat end, for stirring a fire of coals, and clearing it and the grate bars from clinkers, ashes, etc.; a slice.