chucking
 卡緊; 夾具


 Chuck v. i. [imp. & p. p. Chucked p. pr. & vb. n. Chucking.]
 1. To make a noise resembling that of a hen when she calls her chickens; to cluck.
 2. To chuckle; to laugh. [R.]


 Chuck, v. t. [imp. & p. p. Chucked p. pr. & vb. n. Chucking.]
 1. To strike gently; to give a gentle blow to.
    Chucked the barmaid under the chin.   --W. Irving.
 2. To toss or throw smartly out of the hand; to pitch. [Colloq.] “Mahomet Ali will just be chucked into the Nile.”
 3. Mech. To place in a chuck, or hold by means of a chuck, as in turning; to bore or turn (a hole) in a revolving piece held in a chuck.