Windowsill Wby geh1 Best definition Windowsill A sill for your window (you put stuff on it) Hey Barry do me a favour and put my goose on the windowsill. You may also like: Zub'lebrity wahcanweeatmar wikk'd wtj Yeast Barnacle whorestick Zebrahead your marsupial Zerg Wave Yuppy Puppy Zee-unicorn winter kiss zuzuki yossem whitefro West Roxbury Zimraan wrong clicking Wanker's Warts yolo swaggings