Gather in bundles is a term used to describe the process of collecting and organizing items into groups. The term can be used to refer to anything from collecting and sorting documents to gathering and bundling items for storage or transport. The crossword solution for this term is 'sheave, ' which is a device consisting of a wheel with a grooved rim around which a rope or cable is wound. Sheaves are commonly used in pulley systems to lift heavy objects, and can also be used to bundle items together.