noun

1. any of the parts into which a body is separated or separable; division; section
2. Geom.
   1. a part of a figure, esp. of a circle or sphere, marked off or made separate by a line or plane, as a part of a circular area bounded by an arc and its chord
   2. any of the finite sections of a line
3. Linguis. a phone, or single sound, in the stream of speech
4. Zool.
   1. metamere
   2. the part of an arthropod appendage between joints

Etymology: L segmentum < secare, to cut: see saw

transitive verb, intransitive verb