pons asinorumpons· asi·no·rum
- Geom. the fifth proposition of the first book of Euclid (that the base angles of an isosceles triangle are equal)
- any problem hard for beginners
Origin of pons asinorumModL, literally , bridge of asses
A problem that severely tests the ability of an inexperienced person.
Origin of pons asinorumNew Latin pōns asinōrum, bridge of fools (nickname of the Fifth Proposition in the Elements of Euclid, due to its difficulty) : Latin pōns, bridge + Latin asinōrum, genitive pl. of asinus, ass, fool.