The crossword solutions for the term STEW SPHEROID are PEA, which is a three-letter word. PEA is a type of legume that is widely cultivated as a vegetable crop. It is a round, green seed that is often used in soups and stews, hence its inclusion in this crossword puzzle. The term spheroid refers to a three-dimensional shape that is similar to a sphere but not perfectly round. This could be a reference to the shape of the PEA, which is slightly oval.