A look or glance; British slang for viewing or peeking at something.
British dialect/slang term with uncertain origin, possibly from Romany 'dikh' meaning 'to look' or from cockney rhyming slang traditions. It emerged in working-class British speech in the 20th century.
Deek is one of those wonderfully compact British slang words that traveled through working-class communities—it's the kind of word you'd hear in old British detective novels, and it shows how immigrant languages like Romany wove themselves into the fabric of London street language.
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