(optics) a positive-powered lens or group of lenses that comes after the objective lens and before the image plane or the eyepiece, serving to change the size of the image

An athletics discipline that takes place on the field, such as hammer, javelin, triple jump

A study done as a part of field research (fieldwork)

(mathematics) A field that is also a topological space in which addition and multiplication are both continuous.

plural of topological field

plural of energy field

That takes place off a sports field

plural of field mouse

(hunting) to perform a basic gutting of a game animal, without more detailed procedures such as skinning.

plural of field trip