Green’s Dictionary of Slang

stretching n.

(UK Und.) a judicial hanging.

[UK]B.E. Dict. Canting Crew n.p.: Stretching hanging.
[UK]New Canting Dict. [as cit. c.1698].
[UK]Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]G. Andrewes Dict. Sl. and Cant.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.
[UK]G. Kent Modern Flash Dict.
[UK]Flash Dict. in Sinks of London Laid Open.
[UK]Hotten Dict. of Modern Sl. etc.

In compounds

stretching match (n.)

1. a judicial hanging.

[UK]Hotten Dict. of Modern Sl. etc. (2nd edn).
[UK]Sl. Dict.
[UK]H. King Savage London 57: An audible breath of relief passes like a wave over the crowd [...] Billy would be saved his ‘stretching match’.
[UK]Burnley Exp. 8 Aug. 4/8: An execution was a stretching match.

2. a double hanging.

[US]A.J. Pollock Und. Speaks n.p.: Stretching match, a double hanging (prison).

3. (US) a lynching.

[US]Monteleone Criminal Sl. (rev. edn).