"riffs" in the noun sense
1. Riff, Riffian
a Berber living in northern Morocco
2. riff
a jazz ostinato usually provides a background for a solo improvisation
"riffs" in the verb sense
1. flick, flip, thumb, riffle, leaf, riff
look through a book or other written material
"He thumbed through the report"
"She leafed through the volume"
2. riff
play riffs
Source: WordNet® (An amazing lexical database of English)
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