All 3 Uses

fleeting
in
1984, by Orwell
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There was no evidence, only fleeting glimpses that might mean anything or nothing: snatches of overheard conversation, faint scribbles on lavatory walls — once, even, when two strangers met, a small movement of the hand which had looked as though it might be a signal of recognition.†
p. 17.9

fleeting = lasting a short time
But at the last moment, while the crowd still hemmed them in, her hand felt for his and gave it a fleeting squeeze.†
p. 116.8 *
And he did see them, for a fleeting instant, before the scenery of his mind changed.†
p. 258.3

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