dragon's teeth

(redirected from Dragons teeth)

dragon's teeth

pl n
1. (Fortifications) informal conical or wedge-shaped concrete antitank obstacles protruding from the ground in rows: used in World War II
2. sow dragon's teeth to take some action that is intended to prevent strife or trouble but that actually brings it about
[sense 2 from the story of Cadmus]
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References in periodicals archive ?
A year of attempts to nurture friendship between Orangemen who like to march along it and Catholic householders determined "they shall not pass" has seen nothing blossom but dragons teeth roadblocks and steel barricades.
Speed reduction measures include extra speed-limit signing, road markings, change in surface treatments, dragons teeth, countdown signs, vehicle- activated signs, narrowing, pinch points and central refuges.