dec.

Adjective

 * 1)   a style of English Gothic architecture.

Usage notes
This is the customary abbreviation of this term as used in legal citation. See, e.g., The Bluebook: A Uniform System of Citation, Nineteenth Edition (2010), "Subdivisions", Table T16, p. 472-73.

Etymology
.

Noun

 * 1) Dec, Dec. (December)