To put out; quench; stifle: as, to extinguish fire or flame.To destroy; put an end to; suppress: as, to extinguish an army; to extinguish desire or hope; to extinguish a claim or title.To put under a cloud; obscure: eclipse; make unnoticed or unnoticeable: as, he was completely extinguished in this brilliant company.In law, to put an end to. See extinguishment, 2.