Cotton seed is a type of seed used to grow cotton plants. The four crossword solutions for the term 'cotton seed' are BOLL, gins, pima, and BALE. A BOLL is the seed capsule of the cotton plant, which contains the seeds. Gins are machines used to separate the cotton fibers from the seeds. Pima is a type of cotton that is known for its extra-long fibers and softness. Finally, a BALE is a large bundle of cotton fibers that have been compressed and tied together.