change of tack
The act of tacking, turning into the wind so the sail moves to the opposite side.
noun
A small nail with a flat head.
A tough test for even the strongest climber, it was new to the Tour de France this year, but its debut will be remembered for the wrong reasons after one of those spectators scattered carpet tacks on the road and induced around 30 punctures among the group of riders including Bradley Wiggins, the Tour's overall leader, and his chief rivals.
A thumbtack.
A loose seam used to temporarily fasten pieces of cloth.
The lower corner on the leading edge of a sail relative to the direction of the wind.
A course or heading that enables a sailing vessel to head upwind.
verb
To nail (something) with a tack (small nail with a flat head).
To sew/stitch with a tack (loose seam used to temporarily fasten pieces of cloth).
To weld with initial small welds to temporarily fasten in preparation for full welding.
To maneuver a sailing vessel so that its bow turns through the wind, i.e. the wind changes from one side of the vessel to the other.
To sail to windward using a series of alternate tacks across the wind.
noun
A stain; a tache.
A peculiar flavour or taint.
a musty tack