puddling

puddling (countable and uncountable, plural puddlings)

1. The action of forming a puddle.
2. The process of working clay, loam, pulverized ore, etc., with water, to render it compact, or impervious to liquids.
3. (canal engineering) The act of lining a canal with puddle to make it watertight.
4. (metallurgy, historical) The first true industrial process to produce steel from pig iron.
5. A group of mallards (ducks).
6. A behaviour in which animals like butterflies seek out moist substances to obtain nutrients.

•   puddling (metallurgy) on Wikipedia.Wikipedia
•   Mud-puddling on Wikipedia.Wikipedia

puddling

1. present participle and gerund of puddle