DNF
adj.— «The worst finish has been dropped in computing the standing in classes that have completed five or more races): dns–did not start; pms–premature start; dnc–did not compete; dnf did not finish.» —“Winds helpful to U.S. sailor in CORK event” Globe and Mail (Toronto, Can.) Aug. 30, 1978. (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...