centerpiece

cen·ter·piece  (sntr-ps)

n.

1. Something in a central position, especially a decorative object or arrangement placed at the center of a table.

2. The central or most important feature: "Now comes decontrol, the centerpiece of [the President's] energy program" (Tom Alexander).

Thesaurus

Noun	1.	centerpiece - the central or most important feature; "education was the centerpiece of the Democratic Party's political platform" centrepiece characteristic, feature - a prominent attribute or aspect of something; "the map showed roads and other features"; "generosity is one of his best characteristics"
	2.	centerpiece - something placed at the center of something else (as on a table) centrepiece decoration, ornament, ornamentation - something used to beautify epergne - a large table centerpiece with branching holders for fruit or sweets or flowers