equalizer
n.
1792, agent noun from equalize. Sports sense attested by 1930; in the U.S. underworld slang sense of "pistol," it is from c.1900.
| 词汇 | equalizer | 
| 词根词缀 | Online Etymology Dictionary equalizer n. 1792, agent noun from equalize. Sports sense attested by 1930; in the U.S. underworld slang sense of "pistol," it is from c.1900. | 
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