1. tv. & in. to duplicate something; to copy something. Dub this and keep a copy yourself.
2. n. a duplicate; a copy. The dub was so poor we couldn’t understand the dialogue.
3. Go to double saw(buck).
n. double-u, double-u, double-u, the letters WWW found in World Wide Web addresses. (The second version is merely a colloquial pronunciation of double-u, and neither is commonly written or printed.) Our address is dub-dub-dub dot reindeer dot com.