From Longman Dictionary of Contemporary Englishyachtyacht /jɒt $ jɑːt/ ●●○ noun [countable] 
DSOa large boat with a sail, used for pleasure or sport, especially one that has a place where you can sleep → sailing boat, sailboat
DSOa large boat with a sail, used for pleasure or sport, especially one that has a place where you can sleep → sailing boat, sailboatExamples from the Corpus
yacht• We provide a comprehensive range of sizes to suit every yacht specification for leisure use or for the longest of passages.• Sometimes you may spot an occasional dorsal fin when it pops out like a miniature yacht sail.• The Backup New yachts suffer from teething problems, and older yachts need lots of tender loving care.• He could have drowned rowing back from the yacht club.• The resourceful youngster has overhauled the yacht and drummed up sponsors largely by himself.• The yachts later picked up a freshening breeze which reached Force 5 approaching the island.• The yachts tacked back and forth across the Solent, and then moored up for a sumptuous lunch.Origin yacht (1500-1600) Early modern Dutch jaght, from Middle Low German jachtschiff “hunting ship” 