What did the 'gigantic clock of ebony' represent?

The Ebony Clock is a constant reminder of death and symbolizes the inevitability of it. The revelers could neither stop its pendulum from swinging nor could they prevent its ominous tones from dampening their enthusiasm. The Seven Rooms represent the stages of life.

                            i hope this answer helped you

id say it means hes fearful and/or cautious

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