• Webster's Revised Unabridged Dictionary
    • Boottopping (Naut) Sheathing a vessel with planking over felt.
    • Boottopping (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.
    • ***
Century Dictionary and Cyclopedia
    • n boottopping Nautical: The operation of painting that part of a ship's copper which is above the water-line.
    • n boottopping 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.
    • ***


In literature:

Only the miners were there, with their breeches tucked into their boottops and with clay all over them.
"Mark Twain's Speeches" by Mark Twain (Samuel Clemens)