The crossword solution for the term 'on a clothesline, say' is 'HANGING'. This is an activity that is done when clothes are put out to dry. It involves attaching the clothes to a line or rope and suspending them in the air so that they can be exposed to the sun and wind. HANGING clothes on a clothesline is a common practice in many parts of the world, as it is an energy-efficient and cost-effective way to dry clothes.