| n. | 1. | (Mus.) An ancient trumpet. |
| Noun | 1. | tuba - the lowest brass wind instrumentSynonyms: bass horn, sousaphone |
| (networking, protocol) | TUBA - An Internet protocol, described in
RFC 1347, RFC 1526 and RFC 1561, and based on the OSI
Connectionless Network Protocol (CNLP). TUBA is one of the proposals for Internet Protocol Version 6. |