yaw
verb
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to rotate along the vertical axis in the horizontal plane“The plane yawed to the left to match the new heading.”
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to swerve off course momentarily“The ship yawed when the huge waves hit it.”
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to deviate erratically from a set course“The car with the flat started to yaw away from the road.”
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to be wide open“The chasm yawed in front of them.”yawn
noun
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a direction of rotation along the vertical axis in the horizontal plane“The yaw of the plane was affected by the unbalanced thrust.”
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an erratic deflection from an intended courseswerve