From The Collaborative International Dictionary of English v.0.48:
Yaw \Yaw\, n. (Naut.)
A movement of a vessel by which she temporarily alters her
course; a deviation from a straight course in steering.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Yaw \Yaw\ (y[add]), v. i. [imp. & p. p. Yawed (y[add]d); p.
pr. & vb. n. Yawing.] [Cf. Yew, v. i.]
To rise in blisters, breaking in white froth, as cane juice
in the clarifiers in sugar works.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Yaw \Yaw\, v. i. & t. [Cf. Prov. G. gagen to rock, gageln to
totter, shake, Norw. gaga to bend backward, Icel. gagr bent
back, gaga to throw the neck back.] (Naut.)
To steer wild, or out of the line of her course; to deviate
from her course, as when struck by a heavy sea; -- said of a
ship.
[1913 Webster]
Just as he would lay the ship's course, all yawing
being out of the question. --Lowell.
[1913 Webster]