tabber

plural tabbers

1. A device for applying an adhesive tab.

   Mail tabbers are an economical and timesaving alternative for mass mailings, such as newsletters and brochures. Instead of inserting the pages inside an envelope, which then needs to be sealed, a tabber places a small adhesive tab (or wafer seal) on folded sheets of paper to securely hold them shut.

   2013, Entrepreneur magazine, Grant-Writing Business: Step-by-Step Startup Guide

2. in compoundsOne who wears a tab of a specified kind.

   But the sensitivity of the issue still lingered. To this day ex-servicemen still identify themselves as "Red Tabbers" or "Red Tab", […]

   1978, Papers in International Studies: Africa series, page 35

   1 more example

   Under this system, outstanding freshmen cadets (green tabbers) are picked during the first semester, and "marked" with green shoulder tabs and green plastic lapel discs.

   1963, Army, volume 14, page 37

3. computingA user who switches between tabs.

   OmniWeb has a reputation for fast browsing, but if you're a card-carrying member of TA (Tabbers Anonymous), you need the 5.0 beta version to get that feature.

   2004, Sarah Milstein, Rael Dornfest, Google: The Missing Manual, page 172