a vector obtained from a given vector by taking its cross product with the vector whose coordinates are the partial derivative operators with respect to each coordinate.
b.
the operation that produces this vector.
15.
Weightlifting.
a.
an underhand forearm lift in which the barbell, held against the thighs, is raised to the chest and then lowered while keeping the legs, upper arms, and shoulders taut.
b.
a similar forearm lift using a dumbbell or dumbbells, usually from the side of the body to the shoulders.
—Verb phrase
16.
curl up, to sit or lie down cozily: to curl up with a good book.
—Idioms
17.
curl one's lip, to assume or display an expression of contempt: He curled his lip in disdain.
18.
curl one's or the hair, to fill with horror or fright; shock: Some of his stories about sailing across the Atlantic are enough to curl one's hair.
Origin: 1400–50; late ME, appar. back formation from curled, metathetic var. of ME crulled (ptp.) crul (adj.); cf. MD crullen to curl, cruller
To twist (the hair, for example) into ringlets or coils.
To form into a coiled or spiral shape: curled the ends of the ribbon.
To decorate with coiled or spiral shapes.
To raise and turn under (the upper lip), as in snarling or showing scorn.
Sports To lift (a weight) by performing a curl.
v.
intr.
To form ringlets or coils.
To assume a spiral or curved shape.
To move in a curve or spiral: The wave curled over the surfer.
Sports To engage in curling.
n.
Something with a spiral or coiled shape.
A coil or ringlet of hair.
A treatment in which the hair is curled.
The act of curling: the curl of a meandering river.
The state of being curled.
Sports A weightlifting exercise using one or two hands, in which a weight held at the thigh or to the side of the body is raised to the chest or shoulder and then lowered without moving the upper arms, shoulders, or back.
Any of various plant diseases in which the leaves roll up.
Phrasal Verb(s): curl upTo assume a position with the legs drawn up: The child curled up in an armchair to read.
[Middle English crullen, curlen, from crulle, curly, perhaps of Middle Low German origin.]
Assume a position with the legs drawn up; settle down for sleep in this posture. For example, I love to curl up with a good book. [c. 1900]
curl up and die. Retreat, collapse, die, as in At first the horse was ahead but in the home stretch she curled up and died, or I'll just curl up and die if he shows up. This colorful expression for collapsing or dying is often used hyperbolically (second example). [Early 1900s]
curl someone up. Kill someone, as in The sheriff said he'd curl up that outlaw. This usage originated as cowboy slang in the second half of the 1800s.
[kurl] 
