The term 'Dreamy Guy' can be summed up by the crossword solution 'Sandman', which is a 7 letter word. The Sandman is a mythical figure in European folklore who brings good dreams to people while they sleep. He is often depicted as an old man with a long beard and a bag of sand, from which he sprinkles sand into the eyes of children to make them sleepy. He is also sometimes associated with the moon and stars, and is said to be able to control the weather.