a grating sound <as of> something heavy being pushed...

park sang joon

Senior Member
As I reached level ground and hurried toward the place of the action, I passed pockets of ground mist, stirred slightly by a breeze from out of the west, snaking silvery, about my ankles, I heard a grating, crunching sound as of something heavy being pushed or rolled over a rocky surface.
["The Courts of Chaos" of The Great Book of Amber by Roger Zelazny]
I'd like to know "of" means "about" here.
Thank you in advance for your help.
  • park sang joon

    Senior Member
    Thank you, se16teddy, for your very helpful answer. :)
    Then, I'd was wondering if in most cases, "of" of "as of" indicates characteristic of the object "of."
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