Green’s Dictionary of Slang
‘Bartimeus’ Navy Eternal 116: ‘What I should like to know is, what the deuce is a doo-hickie?’ [...] ‘Well, [...] you know more or less what a gadget’s like?’ ‘Yes.’ ‘And a gilguy?’ ‘Yes.’ ‘Well, a doo-hickie is something like that, only smaller as a rule.’.at dohickey, n.1
‘Bartimeus’ Navy Eternal 116: ‘What I should like to know is, what the deuce is a doo-hickie?’ [...] ‘Well, [...] you know more or less what a gadget’s like?’ ‘Yes.’ ‘And a gilguy?’ ‘Yes.’ ‘ Well, a doo-hickie is something like that, only smaller as a rule.’.at gillgadget, n.
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