Green’s Dictionary of Slang

swift n.

(US Und./Aus.) a fast horse, used for getaways in the pre-motorcar era; or in horseracing.

[US]J. Black You Can’t Win (2000) 96: I [...] limped outside where I had an old ‘swift’ tied to a hitching rack.
[Aus]J. Alard He who Shoots Last 204: I feel sure this is one day I can separate the swift from the dead. Do you wish to have something on him, Jack?

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