Reefing is the process by which a sailboat reduces it's sail during windy conditions. Usually, the sail is either gathered in and tied to the boom, or it can be rolled in on sailboats that are so equipped. In particularly windy conditions, it may be necessary to use a double reef to further reduce sail. I'm not sure about "second reefs," but I would assume that it's the same as a double reef.
sail
There are sail planes, sail boats, sail cars, and with a spaceship you could sail to the stars.
sail
Sail me that Frisbee, would you? Do you sail? You sail!
Topgallant sail, also known as the gallant sail or garrant sail
A three sided sail is known as a Lateen sail or also a triangular sail. With a four sided sail one is only able to sail against the wind, but with a Lateen sail it is possible to sail more directly into the wind.
Topgallant sail, also known as the gallant sail or garrant sail
We will set sail in the morning.The sail has torn.
By using a sail and at last resort a mortar
square because it has more surface area
sale as in "bake sale" or"for sale" is the homophone of sail as in "sail boat" /