The term 'Big Chicken' is a slang term used to describe someone who is cowardly or easily intimidated. The crossword solutions for this term are WUSS (4 letters), ROASTER (7 letters), and WIMP (4 letters). WUSS and WIMP are both synonyms for someone who is cowardly, while ROASTER is a type of oven used to cook chicken. Therefore, the term 'Big Chicken' can be interpreted as someone who is a coward and easily intimidated, just like a chicken that is cooked in a ROASTER.