define fracking
LINK / CITE ADD TO WORD LIST. verb. Fracking is defined as hydraulic fracturing, which is a process of using a liquid at high pressure to make fractures in rocks that allow more natural gas or oil to be extracted. An example of fracking is what a drilling company does to try to increase the oil coming out of a well. the injection of water at high pressure into a borehole, in order to open underground fissures for the extraction of natural gas or oil.