[医] 折术

Reef \Reef\, v. t. [imp. & p. p. {Reefed} (r[=e]ft); p. pr. &
vb. n. {Reefing}.] (Naut.)
To reduce the extent of (as a sail) by rolling or folding a
certain portion of it and making it fast to the yard or spar.
--Totten.

{To reef the paddles}, to move the floats of a paddle wheel
toward its center so that they will not dip so deeply.


Reefing \Reef"ing\, n. (Naut.)
The process of taking in a reef.

{Reefing bowsprit}, a bowsprit so rigged that it can easily
be run in or shortened by sliding inboard, as in cutters.