The most common shapes are called open-ended spanner and ring spanner. The term wrench is generally used for tools that turn non-fastening devices (e.g. tap wrench and pipe wrench), or may be used for a monkey wrench - an adjustable spanner. In North American English, wrench is the standard term.
The definition of first mate is the person on a boat that is second in charge after the captain. An example of first mate is the person who gives orders while the captain is busy. first mate. first mate.
Top definition. first mate. The second in command on a ship (I know). The person most likely to stab the captain in the back, which is ironic as he should be his closest confidant. Captain Barbosa was second in command as first mate of the Black Pearl before stabbing his captain Jack Sparrow in the back and taking the ship for his own. The Urban Dictionary Mug.