Bible Dictionaries
Boottopping

Webster's Dictionary

(1):

(n.) 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.) Sheathing a vessel with planking over felt.

Bibliography Information
Webster, Noah. Entry for 'Boottopping'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​b/boottopping.html. 1828.