source noun \ˈsȯrs\
: someone or something that provides what is wanted or needed
: the cause of something (such as a happiness)
: a person, book, etc, that gives information
Full Definition of SOURCE
1a : a generative force : cause
b (1) : a point of origin of procurement : beginning
(2) : one that initiates : author; also : prototype, model
(3) : one that supplies information
2a : the point of origin of a stream of water : fountainheadb archaic : spring, fount
3: a firsthand document or primary reference work