Wordnet 3.0
ADJECTIVE (2)
1. 
 equipped with compound gearing consisting of 2 pinions and 2 wheels in mesh to increase the mechanical advantage; 
- Example: "the double-geared lifting mechanism of a crane"2. 
 (of a lathe) equipped with gearing for reducing the speed of the spindle from that of the driving pulley; 
- Example: "a back-geared lathe"[syn: back-geared, double-geared]
WordNet (r) 3.0 (2006):
double-geared
    adj 1: equipped with compound gearing consisting of 2 pinions
           and 2 wheels in mesh to increase the mechanical
           advantage; "the double-geared lifting mechanism of a
           crane"
    2: (of a lathe) equipped with gearing for reducing the speed of
       the spindle from that of the driving pulley; "a back-geared
       lathe" [syn: back-geared, double-geared]