Akademik

stickup man
noun
an armed thief
Syn: ↑holdup man
Hypernyms: ↑thief, ↑stealer
Hyponyms: ↑highjacker, ↑highwayman, ↑hijacker, ↑road agent

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noun also stickup (-s)
: holdup man

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Informal.
a man who commits a stickup.
[1930-35]

Useful english dictionary. 2012.