potent1
  
  adj.
  - having great power, influence, or effect.
- (of a male) able to achieve an erection or to reach an orgasm.
Derivative
  
    - potence n.
- potency n. (pl. potencies) .
- potently adv.
 
  Etymology
  ME: from L. potent-, posse ‘be powerful, be able’.
 
  
    
potent2
  
  adj.
 
[
postpos.]
  
- formed of crutch-shaped pieces; (especially of a cross) having a straight bar across the end of each extremity.
- of the fur called potent (as a tincture).
n.
 fur resembling vair, but with the alternating pieces T-shaped.
Etymology
  ME: alt. of OFr. potence ‘crutch’, from L. potentia ‘power’ (in med. L. ‘crutch’), from potent- (see potent1).