WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / P / pneumatic caisson pneumatic caisson noun 17 letters Scrabble 24 WWF 31 Definitions noun large watertight chamber used for construction under water caissoncofferdam Look “pneumatic caisson” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →