prick up

Verb

 * 1)  To rise and become more alert.
 * 2)  To raise (one's ears).
 * 3)  To apply an undercoat of plaster in order to create a smooth surface for the final coat.
 * 1)  To apply an undercoat of plaster in order to create a smooth surface for the final coat.
 * 1)  To apply an undercoat of plaster in order to create a smooth surface for the final coat.