To damage; injure.
To manhandle; beat up; rough up.
To make a mess of; to untidy, disorder, soil, or muss.
To botch, bungle; to perform poorly on.
To cause a problem with; to introduce an error or mistake in; to make muddled or confused; spoil; ruin.
To cause (another person) to make unwanted mistakes in a given task, usually through distraction or obnoxious behavior.
To make a mistake; to do something incorrectly; to perform poorly.
To discombobulate, utterly confuse, or confound psychologically; to throw into a state of mental disarray.
To design and construct the contours of a vehicle etc. so as to offer the least resistance to its flow through a fluid.
To simplify or organize a process in order to increase its efficiency.
To modernise.
On a weather chart, a line that is tangent to the flow of the wind.
A line that is tangent to the velocity of flow of a fluid; equivalent to the path of a specific particle in that flow.