The most common and most likely answer to this crossword clue is the 6 letter word BEDECK
I've seen this crossword clue in The Guardian
B
E
D
E
C
K
More clues leading to the result BEDECK
- Piece of furniture – shout of annoyance when head’s been knocked off ornament
- Adorn resting place with Eastern cutwork’s edging
- Dress adopted by monk over clerk’s jacket
- Embellish peeved young cockney’s response to ‘Pyjamas on. Lights out!’
- Ornament Edward found in stream
- Moneylender swaps a note for European ornament
- Adorn Engineer's pack of playing cards
- Journalist wading into stream finds ornament
Buddy explains!

The straight part
We know that "Adorn" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case adorn = bedeck.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does BEDECK mean?
BEDECK verb- To deck, ornament, or adorn; to grace.