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Webster 1913 Edition
Valor
Val′or
,Noun.
 [OE. 
valour
, OF. valor
, valur
, valour
, F. valeur
, LL. valor
, fr. L. valere 
to be strong, or worth. See Valiant
.] [Written also 
valour
.] 1. 
Value; worth. 
[Obs.] 
“The valor of a penny.” Sir T. More.
 2. 
Strength of mind in regard to danger; that quality which enables a man to encounter danger with firmness; personal bravery; courage; prowess; intrepidity. 
For contemplation he and 
valor 
formed. Milton.
When 
It eats the sword it fights with.
valor 
preys on reason,It eats the sword it fights with.
Shakespeare
Fear to do base, unworthy things is 
valor
. B. Jonson.
Webster 1828 Edition
Valor
VAL'OR
,Noun.
  Strength of mind in regard to danger; that quality which enables a man to encounter danger with firmness; personal bravery; courage; intrepidity; prowess.
When valor preys on reason, it eats the sword it fights with.  
For contemplation he and valor form'd.
Ad valorem, in commerce, according to the value; as an ad valorem duty.