Definition of tyrants:
(n) :
A despot; a ruler who governs unjustly, cruelly, or harshly.
(n) :
(by extension) Any person who abuses the power of position or office to treat others unjustly, cruelly, or harshly.
(n) :
(by extension) A villain; a person or thing who uses strength or violence to treat others unjustly, cruelly, or harshly.
(adj) :
(uncommon) Tyrannical, tyrannous; like, characteristic of, or in the manner of a tyrant.
(n) :
(historical, Ancient Greece) A usurper; one who gains power and rules extralegally, distinguished from kings elevated by election or succession.
(n) :
(obsolete) Any monarch or governor.