Hidden dangers or unexpected difficulties that can trap or harm someone. Originally referring to concealed pits used to catch animals, now used metaphorically for any unforeseen hazard.
Compound of 'pit' (from Old English 'pytt') and 'fall' (from Old English 'feallan'). Originally described literal hunting traps—holes covered with branches to catch wild animals. The metaphorical sense of hidden dangers emerged in the 16th century.
The evolution from literal animal traps to metaphorical dangers shows how hunting terminology permeated human thinking about hidden risks. Today's 'pitfalls' in business, relationships, or technology carry the same sense of something dangerous lurking beneath an innocent surface!
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