1. [late 19C] a crinolette or bustle used for distending the back of a woman’s skirt [it raises or ‘elevates’ the back of the skirt].
2. [1910s–20s] (UK Und.) a hold-up man, a robber; a shoplifter [pun on SE hold up/hold up v.1 (1)].
SE in slang uses
[late 19C-1970s] (US) a lift operator.
[1980s+] a phr. describing a fool; one of several implying that one is ‘not all there’.