Longman Dictionary of Contemporary English
Wiktionary
n. A part of the human body that is particularly responsive to sexual stimulation.
WordNet
n. any area of the body especially sensitive to sexual stimulation
Wikipedia
An erogenous zone (from Greek , érōs "love" and English -genous "producing" from Greek , -genḗs "born") is an area of the human body that has heightened sensitivity, the stimulation of which may generate a sexual response, such as relaxation, the production of sexual fantasies, sexual arousal and orgasm.
Erogenous zones are located all over the human body, but the sensitivity of each varies, and depends on concentrations of nerve endings that can provide pleasurable sensations when stimulated. The touching of another person's erogenous zone is regarded as an act of physical intimacy. Some people may resent stimulation in this manner while others may find it pleasing, and this may also depend on the relationship between the people.
Erogenous zones may be classified by the type of sexual response that they generate. Many people are gently aroused when their eyelids, eyebrows, temples, shoulders, hands, arms and hair are subtly touched. Gently touching or stroking of these zones stimulates a partner during foreplay and increases the arousal level. Also, the gentle massage or stroke of the abdominal area along with kissing or simply touching the navel can be a type of stimulation.
Usage examples of "erogenous zone".
Laughter, like touch, was a form of pure communication, the funny bone an underappreciated erogenous zone.
He had never understood why the erogenous zone had been represented as unbeautiful.
It felt like cool silk had slid against her skin, and the sensation stirred every erogenous zone on her.
And she had to agree that he'd revealed a new erogenous zone for her.
The breast was overrated as an erogenous zone, but there were nerves that worked.
He knew her every erogenous zone, her every secret desire and used them as velvet edged weapons against her.
The sensation of the olfactory imprinting process connecting to every erogenous zone in him sent a hard shudder through her that she couldn't hide.
At almost the same moment, jolts of pleasure were transmitted through the leads in her garments to one erogenous zone after another.
The back of my neck was hardly an erogenous zone, although it did feel good.