A large rectangular piece of cotton or other fabric, used on a bed to cover the mattress and as a layer beneath blankets when these are used. A rectangular piece of paper, especially one of a standard size produced commercially and used for writing and printing on. An extensive unbroken surface area of something. A rope attached to the lower corner of a sail for securing or extending the sail or for altering its direction. The space at the bow or stern of an open boat. Cover with or wrap in a sheet or sheets. (of rain) fall in large quantities. Make a sail more or less taut.