The term 'They're Full of Garbage' refers to the various methods of disposing of waste. SCOWS (5 letters) are large, flat-bottomed boats used to transport garbage from land to sea. DUMPS (5 letters) are large areas of land where garbage is dumped and left to decompose. TRASHCANS (9 letters) are containers used to store and dispose of garbage in a more contained manner. All three of these methods are used to dispose of garbage and keep our environment clean.