section

A cutting; a part cut out from the rest of something.

A part, piece, subdivision of anything.

Seeing the British establishment struggle with the financial sector is like watching an alcoholic […]. Until 2008 there was denial over what finance had become. […] But the scandals kept coming, and so we entered stage three – what therapists call "bargaining". A broad section of the political class now recognises the need for change but remains unable to see the necessity of a fundamental overhaul. Instead it offers fixes and patches.

A part, piece, subdivision of anything.

The horn section is the group of symphonic musicians who play the French horn.

A part of a document, especially a major part; often notated with §.

An act or instance of cutting.

To cut, divide or separate into pieces.

Overlap spans and neutral sections have been provided at intervals along the line, which is thus sectioned electrically, not only at the feeder station and track sectioning cabins, but also by switches at certain overlap spans.

To reduce to the degree of thinness required for study with the microscope.

To commit (a person) to a hospital for mental health treatment as an involuntary patient. So called after various sections of legal acts regarding mental health.

Tribunals were set up as watchdogs in cases of compulsory detention (sectioning). […] Informal patients, however, could be sectioned, and this was often a fear of patients once they were in hospital.

The doctor then sectioned her, making her an involuntary patient, and had her moved to a secure ward.

To perform a cesarean section on (someone).

"But if she's gone into active labour she could be bleeding massively and you may have to section her there and then."

You may hear a physician say, "I don't want to section her until the baby declares itself."