In this definition, a "body" is a group or organization. "Interfaith" simply means between the different faiths. So, an interfaith body is an organization or group set up to coordinate the views of different faiths to present a united fromt, especially to media and political leaders.
A history of the interfaith movement in the 20th century can be found at http://www.interfaithdialoguebasics.be/the%20interfaith%20movement%20in%20the%2020th%20century.htm.
Of, relating to, or involving persons of different religious faiths
Interfaith dialog helps to eliminate or reduce false stereotypes, prejudices and unjustified fears through direct human communication. For more information about Interfaith Dialog: http://www.interfaithdialog.org
Interfaith Voices was created in 2001.
The duration of Interfaith Voices is 3180.0 seconds.
Interfaith Worker Justice was created in 1991.
Vision Interfaith Satellite Network was created in 1988.
Anthony Bailey - interfaith campaigner - was born in 1970.
Guru Nanak Interfaith Prize was created in 2007.
InterFaith Conference of Metropolitan Washington was created in 1978.
Elijah Interfaith Institute's motto is 'Sharing Wisdom, Fostering Peace'.
The web address of the Center For Interfaith Relations is: http://www.festivaloffaiths.org
I don't recommend them.