## CURL

### Curl

In vector calculus, the curl is a vector operator that describes the infinitesimal rotation of a 3-dimensional vector field. At every point in the field, the curl of that field is represented by a vector. The attributes of this vector characterize the rotation at that point.

The above text is a snippet from Wikipedia: Curl (mathematics)

### curl

#### Noun

1. A piece or lock of curling hair; a ringlet.
2. A curved stroke or shape.
3. A spin making the trajectory of an object curve.
4. Movement of a moving rock away from a straight line.
5. Any exercise performed by bending the arm, wrist, or leg on the exertion against resistance, especially those that train the biceps.
6. The vector field denoting the rotationality of a given vector field.
{{usex|The curl of the vector field $\vec{F}=(xyz,xyz,xyz)$ is the vector field $\vec{\nabla}\times\vec{F}=(xz-xy,xy-yz,yz-xz)$.|lang=en}}
7. The vector operator, denoted $\rm{curl}\;$ or $\vec{\nabla}\times\vec{\left(\cdot\right)}$, that generates this field.
8. Any of various diseases of plants causing the leaves or shoots to curl up; often specifically the potato curl.
9. The contrasting light and dark figure seen in wood used for stringed instrument making; the flame.

#### Verb

1. To cause to move in a curve.
2. To make into a curl or spiral.
3. To assume the shape of a curl or spiral.
4. To move in curves.
5. To take part in the sport of curling
I curl at my local club every weekend.
6. To exercise by bending the arm, wrist, or leg on the exertion against resistance, especially of the biceps.
7. To twist or form (the hair, etc.) into ringlets.
8. To deck with, or as if with, curls; to ornament.
9. To raise in waves or undulations; to ripple.
10. To shape (the brim of a hat) into a curve.

The above text is a snippet from Wiktionary: curl