Green’s Dictionary of Slang

blank n.

1. [mid-19C+] a euph. for a variety of obscenities, e.g. bugger n.1 , shit n., bastard n. etc.

2. [mid-19C] (Aus. Und.) the victim of a street robbery who proves to have no possessions or money to steal.

3. [1950s] (US prison) an aspirin.

4. [1950s–60s] a bad or insignificant, worthless person.

5. [1950s+] (orig. prison) a rejection, esp. of a parole application.

6. [1960s] a halt, a stop.

7. [1960s] a fault, a bad characteristic.

8. [1960s+] (drugs, also blanks) any powder sold as a narcotic but absolutely without effect; thus generic for second-rate drugs.

SE in slang uses

In phrases

draw a blank (v.) (also draw blank(s), draw it blank) [SE draw a blank, ult. drawing a blank ticket in a lottery]

[19C+] to fail, to be disappointed, frustrated.

fire blanks (v.) [1960s+]

of a man, to be infertile, to ejaculate infertile semen.

pull a blank (v.)

[1920s] (US) to be rejected.

slip someone a blank (v.)

[1900s] to deceive.

shoot a blank (v.)

1. [1950s–70s] (US) to fail, to have no luck.

2. [1980s+] (US black, also shoot blanks) to attempt sophisticated conversation but to fail in so doing; to use words that have no ‘target’.

shoot blanks (v.)

1. [1950s+] to ejaculate infertile semen; thus blank shooter n.

2. [1960s+] of a man, to fail to achieve an erection, to be impotent.