1. (noun) a moderately slow tempo (a walking pace)

• pacing
• tempo

2. (noun) a musical composition or musical passage to be performed moderately slow

• composition
• musical composition
• opus
• piece
• piece of music
• musical passage
• passage

1. (adverb) at a moderately slow tempo

• music

1. (adjective) (of tempo) moderately slow

• slow