yaw 
(yô)
(yô)v. yawed, yaw·ing, yaws
v.intr.
1. Nautical To swerve off course momentarily or temporarily: The ship yawed as the heavy wave struck abeam.
2. To turn about the vertical axis. Used of an aircraft, spacecraft, or projectile.
3. To move unsteadily; weave.
v.tr.
To cause to yaw.
n.
1. The act of yawing.
2. Extent of yawing, measured in degrees.
[Perhaps of Scandinavian origin.]