He used his jackknife to open the package.
A type of folding knife with a blade that can be locked in place.
The gymnast jackknives into the pool.
To bend or fold in a way that resembles a jackknife, often used in reference to a sudden movement.
ด้วยพจนานุกรมภาพและแฟลชการ์ดที่ทรงพลังฟรี
