A Valid Definition: (n.) A thing considered as a unit or an element of a larger thing, quantity, or class; a portion.
Eg. “That was a pleasant piece of cake”, “World peace”
The invalid definition: (n.) Senior Officer or Senior Officer wannbe jargon used to sumise an event, practice, discipline, occurrence or concept.
“We’re going to segway into the JPA piece”;”That is encompassed in the wider-force concept piece”. cf. Essentially
(n.) Indeterminable abilities that allow one to perform basic pilot skills to solve a situation without reference to prior planning or discussion. Eg: “Do some ~ to get us out of here”. cf. Black art