Simple past tense and past participle of leash.(verb)
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Use "leashed" in a sentence
"It tells us that there are things that SHOULD be "leashed" - held back, restrained, suppressed - that "leashing" such impulses is the normal state, and when that ceases to be, then something has gone wrong."
"In a kind of leashed savagery, she probed the fowl with her knife point."
""That," he said, with a kind of leashed and restrained ferocity in his voice, "is Major P.tnam P. Stone -- and the P.stands for P.st, which is his middle name -- late of the Southern Confederacy.""