Definitions of section:

• noun:   one of several parts or pieces that fit with others to constitute a whole object

  Example: "A section of a fishing rod"

• noun:   a self-contained part of a larger composition (written or musical)

  Example: "He always turns first to the business section"

• noun:   a segment of a citrus fruit

  Example: "He ate a section of the orange"

• noun:   a small team of policemen working as part of a police platoon
• noun:   a small army unit usually having a special function
• noun:   a division of an orchestra containing all instruments of the same class
• noun:   (geometry) the area created by a plane cutting through a solid
• noun:   a distinct region or subdivision of a territorial or political area or community or group of people

  Example: "No section of the nation is more ardent than the South"

• noun:   a very thin slice (of tissue or mineral or other substance) for examination under a microscope

  Example: "Sections from the left ventricle showed diseased tissue"

• noun:   a land unit of 1 square mile measuring 1 mile on a side
• noun:   the cutting of or into body tissues or organs (especially by a surgeon as part of an operation)
• noun:   one of the portions into which something is regarded as divided and which together constitute a whole

  Example: "The finance section of the company"

• noun:   a specialized division of a large organization

  Example: "She got a job in the historical section of the Treasury"

• verb:   divide into segments
• name:  A surname (very rare: popularity rank in the U.S.: #54338)