Green’s Dictionary of Slang

shyckle n.

also shyker
[Yid. sheitl, the wig trad. worn by orthodox Jewish women subsequent to their marriage]

a wig.

[UK]R. Hauser Homosexual Society Appendix 3, 167: Shyckle, wig.
[US]B. Rodgers Queens’ Vernacular 180: shyckle (Brit gay sl) a wig.
[UK]P. Baker Fabulosa 298/1: shyckle, shyker, sheitel, a wig.
[UK]R. Milward Man-Eating Typewriter 109: [They] donned drogles, bombshell shykas and sparkling groinage [ibid.] 215: [C]logging the switchboard with demands for a [...] skya-fencer, fang-mender [etc].