English
Noun
en-noun|sg=boot-topping
- nautical The process of cleaning the upper part of a ship's underwater hull and daub|daubing it with a protecting layer of antifouling substance.
- nautical Any substance used for boot-topping, especially a mixture of tallow, sulphur or lime and rosin, which was commonly used to paint the bottoms of wooden ships, as a deterrent against weeds and barnacles, and to reduce friction.
Alternative spellings
boot topping
References
http://www.globalsecurity.org/military/systems/ship/systems/paint.htm
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