"pacing" in the noun sense
1. tempo, pacing
music) the speed at which a composition is to be played
2. pacing
walking with slow regular strides
"pacing" in the verb sense
1. pace
walk with slow or fast paces
"He paced up and down the hall"
2. pace
go at a pace
"The horse paced"
3. pace, step
measure (distances) by pacing
"step off ten yards"
4. pace
regulate or set the pace of
"Pace your efforts"
Source: WordNet® (An amazing lexical database of English)
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