Definition of itch

• v. i. - To have an uneasy sensation in the skin, which inclines the person to scratch the part affected.
• v. i. - To have a constant desire or teasing uneasiness; to long for; as, itching ears.
• n. - An eruption of small, isolated, acuminated vesicles, produced by the entrance of a parasitic mite (the Sarcoptes scabei), and attended with itching. It is transmissible by contact.
• n. - Any itching eruption.
• n. - A sensation in the skin occasioned (or resembling that occasioned) by the itch eruption; -- called also scabies, psora, etc.
• n. - A constant irritating desire.