treffn.
/ˈtrɛf/ Espionage slang (originally U.S.).
A secret meeting(-place), esp. for the transfer of goods or information.
ΘΚΠ
the mind > attention and judgement > enquiry > investigation, inspection > secret observation, spying > [noun] > information exchange
letterbox1940
drop1959
treff1963
post office1965
1963 R. I. McDavid & D. W. Maurer Mencken's Amer. Lang. (new ed.) 729 The CIA now reportedly uses an argot (e.g., dubok, a drop, from the Russian for oak tree, and treff, a clandestine meeting place, from the German treffen) from which some terms appear to be filtering into underworld usage.
1981 ‘N. West’ MI5 vii. 169 This was felt to be a rather sensitive..area, with MI5 double agents holding meetings or ‘treffs’ in neutral countries abroad.
1983 W. Garner Think Big iv. 48 Make a list..of all the drops, pick-ups and treffs. A complete picture of the to-ings and fro-ings.
This entry has not yet been fully updated (first published 1993; most recently modified version published online September 2019).
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n.1963