'Secondo' definitions:

Definition of 'secondo'

(from WordNet)
noun
The second or lower part of a duet (especially a piano duet)

Definition of 'Secondo'

From: GCIDE
  • Secondo \Se*con"do\ (s[-e]*k[o^]n"d[-o]; It. s[asl]*k[-o]n"d[-o]), n. [It.] (Mus.) The second part in a concerted piece. [1913 Webster]