an area of open land surrounded by a hedge or fence and used for cultivation or pasture
an area of land containing a natural resource
a coal field
the place where a battle is fought, or a battle itself
a large unbroken expanse, e.g. of ice
= airfield
an area constructed, equipped, or marked for sports
the part of a sports area enclosed by the running track and used for athletic field events
a branch of study or knowledge, or of an activity
the sphere of practical operation outside a place of work such as a laboratory
geologists working in the field
an area in which troops are operating, e.g. in an exercise or theatre of war
(used before a noun) working or for use in the field
field operations
field artillery
(the field) the participants in a sports activity, esp with the exception of the favourite or winner
in cricket, the fielders collectively
a space on which something is drawn or projected, esp the surface on which a coat of arms is displayed
a set of mathematical elements that when subject to the two binary operations of addition and subtraction is a commutative (having results independent of the order of the elements involved) group under addition and, excluding zero, is a commutative group under multiplication
a region in which a mathematical quantity, e.g. a scalar or vector, is associated with every point
a region or space in which a given effect, e.g. magnetism, exists
the area visible for observation through an optical instrument
an area, e.g. a region of a computer disk store, in which a particular type of information is recorded
said e.g. of a sports team: to go onto a playing field
to enter on a military campaign