"solos" in the noun sense

1. solo

any activity that is performed alone without assistance

2. solo

a musical composition for one voice or instrument (with or without accompaniment)

3. solo

a flight in which the aircraft pilot is unaccompanied

"solos" in the verb sense

1. solo

fly alone, without a co-pilot or passengers

2. solo

perform a piece written for a single instrument

Source: WordNet® (An amazing lexical database of English)

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