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Tired associate leaves to snort speed at bar in Columbia, say (5,7)

Ross

I believe the answer is:

space shuttle

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But I can't explain it at all! Could you help me understand?

(Other definitions for space shuttle that I've seen before include "Discovery, say" , "Reusable launch craft" , "Reusable vehicle for putting things into orbit etc" , "high flyer" , "Reusable orbiter" .)

I've seen this clue in The Hindu.
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