sub

What does sub mean?

• A valid word accepted in tournament Scrabble and Words With Friends play.

• noun

  a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States

• verb

  be a substitute

• noun

  a submersible warship usually armed with torpedoes

Anagrams of sub