Definition of fid in English:
1.1A square wooden or iron bar that takes the weight of a topmast stepped to a lower mast by being passed through holes in both masts.
- The fid, therefore, must be withdrawn every time the top-mast is lowered.
- The topmast is held in place by a fid, or pin passing through the masthead and topmast.
early 17th century: of unknown origin.
Definition of fid in:
- British & World English dictionary