What is "trim of sails"

Trim \Trim\, n.

1. Dress; gear; ornaments.

   Seeing him just pass the window in his woodland trim.
   --Sir W. Scott.

2. Order; disposition; condition; as, to be in good trim. `` The trim of an encounter.''
   --Chapman.

3. The state of a ship or her cargo, ballast, masts, etc., by which she is well prepared for sailing.

4. (Arch) The lighter woodwork in the interior of a building; especially, that used around openings, generally in the form of a molded architrave, to protect the plastering at those points.

   In ballast trim (Naut.), having only ballast on board.
   --R. H. Dana, Jr.

   Trim of the masts (Naut.), their position in regard to the ship and to each other, as near or distant, far forward or much aft, erect or raking.

   Trim of sails (Naut.), that adjustment, with reference to the wind, witch is best adapted to impel the ship forward.