yeast - no bread, wine, beer, cider, lager, gin, whiskey, vodka, rum, perry, champagne without those primitive little fungi!
yeald - what you get out of something having put in something in the first place.
yesterday I signed into BCUK, and the day before that come to think of it, ... and the day before that .....
York - originally an ancient Celtic settlement
Yule is the winter solstice celebration
Yearn for the open spaces and the woods and the moors and the camps and the wildlife and the good old ancient days and .......
Wye river - OK it isn't a Y but it sounds like it.
Y - junction - a place to start getting lost (if I am reading the map anyway)
Yack - To talk persistently and meaninglessly; to chatter, so there you go then. That's us.
Yak (Latin name Bos Grunniens - what a great name) - the wild mountain ox of central asia
Yip, Yap and Yelp - some of the sounds of the huskey and the wolf and other dogs.
Yale - is a mythical beast first described by Plinny the elder! It had horns and might have been like a water buffalo or a mountain goat.