turn

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turn

1. Music a melodic ornament that makes a turn around a note, beginning with the note above, in a variety of sequences
2. Theatre chiefly Brit a short theatrical act, esp in music hall, cabaret, etc.
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

turn

[′tərn]
(electricity)
One complete loop of wire.
(mathematics)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

TURN

(messaging, protocol)
An SMTP command with which a client asks the server to open an SMTP connection to the client, thus reversing their roles.

Superseded by ETRN.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
References in classic literature ?
Harvey understood from the Eldridge chart that the Old Virgin and a nest of curiously named shoals were the turning-point of the cruise, and that with good luck they would wet the balance of their salt there.
The turning-point in our hero's school career had now come, and the manner of it was as follows.
Later on, when he recalled that time and all that happened to him during those days, minute by minute, point by point, he was superstitiously impressed by one circumstance, which, though in itself not very exceptional, always seemed to him afterwards the predestined turning-point of his fate.