Simple past tense and past participle of deck.(verb)
Adorned or embellished.(adjective)
Having a specified number or type of decks.(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "decked" in a sentence
"Namely, the mighty choice sight gag of Wolowitz walking in decked out like an Adam Lambert wannabe sporting a coif that was somehow equal parts emo and rockabilly."
"East, through a sandy plain decked with great numbers of Rocky mounds, which were all cross cracked, at the top, leaving cavities in some cases, large enough to shelter both men and horses, from the balls or arrows of"
"Then taking by the hilt his sword decked with gold, he drew it from its scabbard, and made signs to the chosen youths of the Greeks to hold the virgin."