To kite means to run away with the aim of avoiding damage. Kiting is not to be confused with simply running - those fleeing from battle and not contributing are not kiting.
Effective kiting is dependent on skill recognition as well as recognition of profession limitations. Against warriors, spellcasters can be expected to kite. However, a more effective means of kiting would be to sidestep (strafe) just outside the range of the weapon, as fleeing is a special designation that increase the likelihood of critical hits.
In addition, effective kiting also requires recognition of the ranges of skills appearing in the skill monitor and the requisite actions to avoid the range of effects, such as the range of PBAoE skills and skills like Earthquake and Chain Lightning.