1. Closed or secured with or as if with a seal
2. Closed so tightly as to be airtight or watertight.
3. Determined irrevocably
4. Established irrevocably; SYN. certain.
5. Undisclosed for the time being
6. Covered with a waterproof coating
7. (Australia) Having been paved.

ETYM Latin, a cover or lid, from operire to cover.
Cover or lid; lid-like organ or covering.
Lidlike organ, as of moss capsule and mollusk shell; fish's gill cover.
Small cap covering the spore-producing body of many mosses. It is pushed aside when the spores are mature and ready to be ejected.
A hard flap serving as a cover for the gill slits in fishes or the opening of the shell in certain gastropods when the body is retracted. + prikaži više