ears prick (up)

:  the characteristic vertebrate organ of hearing and equilibrium consisting in the typical mammal of a sound-collecting outer ear separated by the tympanic membrane from a sound-transmitting middle ear that in turn is separated from a sensory inner ear by membranous fenestrae

:  any of various organs (as of a fish) capable of detecting vibratory motion

:  the external ear of humans and most mammals

:  the fruiting spike of a cereal (such as wheat or corn) including both the seeds and protective structures

:  to form ears in growing

:  a mark or shallow hole made by a pointed instrument

:  a pointed instrument or weapon

:  a sharp projecting organ or part

:  to pierce slightly with a sharp point

:  to affect with anguish, grief, or remorse

:  to ride, guide, or urge on with or as if with spurs :  goad

:  in or into a higher position or level

:  away from the center of the earth

:  from beneath the ground or water to the surface

:  risen above the horizon

:  standing

:  being out of bed

: used as a function word to indicate motion to or toward or situation at a higher point of

:  up into or in the

:  in a direction regarded as being toward or near the upper end or part of

:  one in a high or advantageous position

:  an upward slope

:  a period or state of prosperity or success

:  to rise from a lying or sitting position

:  to move upward :  ascend

: used with and and another verb to indicate that the action of the following verb was either surprisingly or abruptly initiated