teeth arm
n.— «Signals is a “teeth” arm (in British parlance)…. To be a Service Commander in Nigeria requires that one have the right type of commission (regular combatant) and belong to a “teeth arm” (i.e. Infantry, Artillery, Armour, Combat Engineers, Intelligence, or Signals).» —“Who is General AO Ogomudia” by Nowa Omoigui Omogui.com Sept. 20, 2004. (source: Double-Tongued Dictionary)
Further reading
There are eight major planets, but more than a million minor ones, including asteroids. If you discover one, you get the honor of naming it. The Dictionary of Minor Planet Names includes minor planets named for rock bands, jazz musicians, poets, and...
One of the celestial bodies listed in The Dictionary of Minor Planet Names(Amazon) is called Sumaura. It’s the name of the oldest private elementary school in Kobe, Japan, and was suggested by the discoverer’s son. This is part of a...