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.
And since in this famous fishery, each mate or headsman, like a Gothic Knight of old, is always accompanied by his boat-steerer or harpooneer, who in certain conjunctures provides him with a fresh lance, when the former one has been badly twisted, or elbowed in the assault; and moreover, as there generally subsists between the two, a close intimacy and friendliness; it is therefore but meet, that in this place we set down who the Pequod's harpooneers were, and to what headsman each of them ...