Wood where the fibers have swelled, usually because of becoming wet. Wood is often sanded with the grain raised to achieve an extremely smooth finished surface.
A roughened condition of the surface of veneer where the hard latewood is raised above the softer earlywood, but not torn loose from it. In veneer. generally caused by uneven moisture absorption.
link The roughened condition of sanded wood when the hard latewood rises above the soft earlywood when moisture is applied.