Ming Thein’s Horological Dictionary
Easy and great information about watches and how they tick
(http://www.tp178.com/jd/ming_dictionary/edit[1].html)
Examples of what is in it:
F
Fast Beat – A movement which has a frequency of 8 Hz or higher, i.e. 28800bph or more. See also Frequency 28,800 vph is 4 Hz.
Finishing – Any method of applying a surface finish to a part, be it decorative or functional. See also Guilloche, Anglage, Perlage, Polishing, Black Polishing, Engraving, Engine Turning
Five minute repeater – A complication which chimes the time on demand in hour and five minute increments on two gongs. See also Chime, Gong, Hammer, Repeater, Minute Repeater, Carillon, Sonnerie
[censored] – A concentric protuberance on a part.
Floating lugs – Lugs attached by means of a pivot to the case, allowing them to move. See also Strap, Band, Bracelet, Lugs
Flyback – A chronograph that can be reset and restarted without stopping, achieved by a single push of a button. This term is often confused with retrograde hands and split second chronographs, because they ‘fly back’ to their original positions. See also Chronograph
and so on....
Multilingual lexicon relating to watch terms
http://www.worldtempus.com/wt/1/339/
For example
Italian to English
Riserva di carica = Power reserve