tata is the Telerin number "two".
The Roots for "two" have been AT-AT, ATTA and other variants. The Common Eldarin ancestor was atáta.
According to the legend of Cuivienyarna, the word perhaps derives from the name Tata.
 See also
- ↑ Vinyar Tengwar 42 p.26-27
J.R.R. Tolkien, Christopher Tolkien (ed.), The War of the Jewels, "Part Four. Quendi and Eldar", p. 421