Noun
specially hardened steel plate used to protect fortifications or vehicles from enemy fire
Source: WordNetBy about 1400 the full harness of plate armour had been developed in armouries of Lombardy. Source: Internet
An arming doublet (also called aketon) worn under armour, particularly plate armour of fifteenth- and sixteenth-century Europe, contains arming points for attaching plates. Source: Internet
For instance, plate armour first appeared in Medieval Europe when water-powered trip hammers made the formation of plates faster and cheaper. Source: Internet
By the mid-fourteenth century it was replaced with the "jupon" (or "gipon"), a much shorter item, often padded for supplementary protection. citation In the 15th century, once suits of plate armour became common, the surcoat was phased out of use. Source: Internet
From their introduction, muskets could pierce plate armour, so cavalry had to be far more mindful of the fire. Source: Internet
By the 14th century, plate armour was commonly used to supplement mail. Source: Internet