Segment is an ambiguous tag and one should refrain from using it. It has several, very different, meanings in CS. Please try and pick a more accurate tag for your post.
- Segmentation (memory), the division of computer memory into segments
- Image segment created in computer vision
- String segment, the substring of a pattern delimited by two don't cares or one don't care and beginning or end of the pattern
- Network segment, a part of a larger computer network
- A protocol data unit of the transport layer in computing, e.g. TCP segment
