The crossword solutions for the term CASTOR OR OLIVE are OYL (3 letters), OIL (3 letters), TWIN (4 letters), and OILS (4 letters). OYL stands for olive OIL, which is a type of vegetable OIL made from olives. OIL is an acronym for OIL, which is a liquid hydrocarbon that is used as fuel or lubricant. TWIN refers to Castor and Pollux, the TWIN sons of Zeus in Greek mythology. OILS is an acronym for oils, which are substances that are liquid at room temperature and are used for lubrication, fuel, and other purposes.