boottopping

Century Dictionary and Cyclopedia

1. n. Nautical: The operation of painting that part of a ship's copper which is above the water-line.
2. n. The process of removing grass, slime, etc., from the side of a ship, and daubing it over with a mixture of tallow, sulphur, and resin.

Wiktionary

1. n. nautical The act or process of daubing a vessel's bottom near the surface of the water with a mixture of tallow, sulphur, and resin, as a temporary protection against worms, after the slime, shells, etc., have been scraped off.
2. n. nautical Sheathing a vessel with planking over felt.

GNU Webster's 1913

1. n. (Naut.) The act or process of daubing a vessel's bottom near the surface of the water with a mixture of tallow, sulphur, and resin, as a temporary protection against worms, after the slime, shells, etc., have been scraped off.
2. n. (Naut.) Sheathing a vessel with planking over felt.