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.
A greenhorn is the lowest man on the totem pole on a crab boat. He or she works for a season or two on the deck, helping the deckhands and performing the grunt work. We'll cover those grunt work tasks in more detail in the next section. What's the payoff? A successful crab boat can bring in nearly a million dollars in one trip.