diff

Noun

 * 1)  Any program which compares two files or sets of files and outputs a description of the differences between them.
 * 2)  The output of a diff program, a diff file.
 * : the differential gear in an automobile.
 * : differential of types of white blood cell in a complete blood count.
 * 1)  A difficult route.
 * 1)  Any program which compares two files or sets of files and outputs a description of the differences between them.
 * 2)  The output of a diff program, a diff file.
 * : the differential gear in an automobile.
 * : differential of types of white blood cell in a complete blood count.
 * 1)  A difficult route.
 * : the differential gear in an automobile.
 * : differential of types of white blood cell in a complete blood count.
 * 1)  A difficult route.
 * : differential of types of white blood cell in a complete blood count.
 * 1)  A difficult route.
 * 1)  A difficult route.
 * 1)  A difficult route.
 * 1)  A difficult route.

Verb

 * 1)  To run a diff program on (files or items) so as to produce a description of the differences between them, as for a patch file.
 * 2)  To compare two files or other objects, manually or otherwise.
 * 1)  To compare two files or other objects, manually or otherwise.

Proper noun

 * 1)  A program, historically part of the Unix operating system, which compares two files or sets of files and outputs a description of the differences between them.