In morphology, a bound morpheme is a morpheme that appears only as part of a larger word; a free or unbound morpheme is one that can stand alone. A bound morpheme is also known as a bound form, and similarly a free morpheme is a free form. Many roots are free morphemes, e.g., ship- in `shipment`, while others are bound. Roots normally carry lexi..... Found on http://en.wikipedia.org/wiki/Bound_morpheme