The most common and most likely answer to this crossword clue is the 8 letter word DISPLAYS
I've seen this crossword clue in The Daily Telegraph
D
I
S
P
L
A
Y
S
Buddy explains!
The straight part
We know that "spectacles" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case spectacles = displays.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 DISPLAYS mean?
DISPLAYS noun- A show or spectacle.
- A piece of work to be presented visually.
- An electronic screen that shows graphics or text.
- The presentation of information for visual or tactile reception.
- (travel, in a reservation system) The asterisk symbol, used to denote that the following information will be displayed, eg, *H will "display history".
- To show conspicuously; to exhibit; to demonstrate; to manifest.
- To make a display; to act as one making a show or demonstration.
- To extend the front of (a column), bringing it into line.
- To make conspicuous by using large or prominent type.
- To discover; to descry.
- To spread out, to unfurl.