1. [18C] the pubic hair [in this context the ‘flag’ displayed by the genitals].
2. [late 19C+] (US tramp) a bedroll [one ‘unfurls’ it].
3. [1930s–40s] (US prison) a report citing a violation of prison regulations.
1. [late 19C+] (also pack the banner, carry the stick) to walk the streets as a tramp; thus banner-carrier n.
2. [1920s–30s] to sleep rough, esp. of the thousands of homeless children who were forced to sleep in the New York streets.
3. [1930s] to live as a tramp.
[1940s] (UK Und./gay) of a male prostitute, to solicit.
[1940s–50s] (US Und.) to move from the general prison population into protective solitary confinement.