The amount of energy that must be absorbed or lost to raise or lower the temperature of 1 g of liquid water by 1°c see concept 3.2 (page)

Specific heat capacity

Explanation:

Heat capacity is defined as amount of the heat supplied or absorbed by the given mass of the material so to make a unit change in the material's temperature.

The SI unit is Joule / kelvin (J/K).

It is an extensive property.  

While,  

Specific heat capacity is the amount of heat absorbed or lost by one gram of mass of the substance to raise it's temperature by 1°C or 1 K

It is an intensive property.