What does ETA mean?

Also, is there a thread somewhere with definitions of such abbreviations that I haven’t found? I guess I’m not on here enough to know them all and get pretty confused sometimes. Thanks.

ETA = Edited To Add
(Or Expected Time of Arrival)

Check the FAQ for COTH acronyms.

Or this
http://www.chronofhorse.com/forum/showthread.php?t=142900

ETA = estimated time of arrival in the transportation world