CAISSON
Scrabble letter values: C3A1I1S1S1O1N1 = 9
Definition
- noun an ornamental sunken panel in a ceiling or dome. — synonyms: coffer, lacunar
- noun a two-wheeled military vehicle carrying artillery ammunition.
- noun a chest to hold ammunition. — synonyms: ammunition_chest
- noun large watertight chamber used for construction under water. — synonyms: pneumatic_caisson, cofferdam