The crossword solution for the term 'Pickling Veggie' is 'Cuke', which is a four-letter word. Cuke is a shortened form of cucumber, which is a vegetable commonly used in pickling. Pickling is a process of preserving food by soaking it in a brine or vinegar solution. Cucumbers are one of the most popular vegetables to pickle, and are often used to make pickles, relishes, and other condiments.