Deliverable
Etymology
A twentieth-century noun coined from the verb "deliver," which comes through Old French "delivrer" from Late Latin "deliberare" (to set free), built from "de-" and "liberare" (to liberate). The idea of setting something free became handing something over. Project-management culture turned the adjective into a countable thing you owe.
noun · /dih-LIV-er-uh-bul/
A concrete, handed-over result that a piece of work is supposed to produce — a report, a design, a working feature.
What it names
It converts vague effort into something you can point at and check off, so "we worked hard" becomes "we produced this."
Example
The workshop was fun, but our only deliverable was a one-page summary nobody read.
Related idea
A deliverable is the tangible output; a milestone is the point in time by which it’s due. You produce deliverables; you reach milestones.