This is a passage from a novel:
Neal had lovely ears. A little too big, and they poked out at the top like wings. Georgie liked to hold his head by his ears. When he'd let her. She could imagine his head in her hands now. Could feel her thumbs stroking the tops of his ears, her knuckles brushing against his clippered hair.
What does clippered mean in the passage? I looked it up in the dictionaries, but there are no definitions of clipper in verb or adjectival form.