spanker

noun

1. a person or thing that spanks
2. Informal an exceptionally fine, large, etc. person or thing
3. Naut.
   1. a fore-and-aft sail, usually hoisted on a gaff, on the after mast of a square-rigged vessel
   2. ☆ the after mast and its sail on a schooner-rigged vessel of more than three masts