THREATENING n.
a. & n. from Threaten, v. -- Threat"en*ing*ly, adv. Threatening letters (Law), letters containing threats, especially those designed to extort money, or to obtain other property, by menaces; blackmailing letters.
TRAINING n.
The act of one who trains; the act or process of exercising, disciplining, etc.; education. Fan training (Hort.), the operation of training fruit trees, grapevines, etc., so that the branches shall radiate from the stem like a fan. -- Horizontal training (Hort.), the operation of training fruit trees, grapevines, etc.…
TUNING n.
a. & n. from Tune, v. Tuning fork (Mus.), a steel instrument consisting of two prongs and a handle, which, being struck, gives a certain fixed tone. It is used for tuning instruments, or for ascertaining the pitch of tunes.