codpiece

thumb|Codpiece and dog belonging to Guidobaldo II della Rovere, Duke of Urbino, portrait by [[Angelo Bronzino, 1531–32]] thumb|upright=1.2|A codpiece was commonly worn during the Renaissance; oil on oak painting by [[Pieter Brueghel the Younger]]

A codpiece () is a triangular piece that attached to the front of men's hose, covering the fly. It may be held in place by ties or buttons. It was an important fashion item of European clothing during the 15th–16th centuries, in the 16th century becoming a firm upwards-pointing projection based on a stiff material such as boiled leather, or in plate armour, steel.