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hectometer, hectometre, hm | a metric unit of length equal to 100 meters | |
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hum, uh oh, uh-huh, uh-uh, hm, hrm, unh-unh, unh-uh, hmph, hmmf, um, umm, er, let me see, let's see | an expression that is uttered to signal a pause in speech while thinking |