Linocut, lino or linoleum prints are made by carving into a block of lino/linoleum. Not the flooring lino, but an artist's lino which is specially made for the art.
In brief, a block of lino is cut, then inked and put through a press. Linocuts are what's called: original prints. The distinctive thing about original prints is that they are not made by pressing a 'print' button on a computer or printing machine. Lino cutting is just one way of making original prints.
Below is a visual step-by-step I'm developing which hopefully helps you understand what a lino print is