Chock

1. To encounter.
2. A wedge, or block made to fit in any space which it is desired to fill, esp. something to steady a cask or other body, or prevent it from moving, by fitting into the space around or beneath it.
3. A heavy casting of metal, usually fixed near the gunwale. It has two short horn-shaped arms curving inward, between which ropes or hawsers may pass for towing, mooring, etc.
4. An encounter.
5. To fill up, as a cavity.
6. Entirely; quite; as, chock home; chock aft.
7. To stop or fasten, as with a wedge, or block; to scotch; as, to chock a wheel or cask.