1) Symptom 
Rhinorrhea or rhinorrhoea is a condition where the nasal cavity is filled with a significant amount of mucus fluid. The condition, commonly known as a `runny nose`, occurs relatively frequently. Rhinorrhea is a common symptom of allergies or certain diseases, such as the common cold or hay fever. It can be a side effect of crying, exposure to co.....
(rhino- + Gr. rhoia flow) the free discharge of a thin nasal mucus. 
(ri″no-re´ә) the free discharge of a thin nasal mucus. cerebrospinal fluid rhinorrhea discharge of cerebrospinal fluid through the nose, usually due to skull fracture.
Type: Term Pronunciation: rī′nō-rē′ă Definitions: 1. A discharge from the nose.
Rhinorrhea: Medical term for a runny nose. From the Greek words "rhinos" meaning "of the nose" and "rhoia" meaning "a flowing."
[n] - persistent watery mucus discharge from the nose (as in the common cold)
rhinorrhea, rhinorrhoea 1. A discharge from the nasal mucous membrane. 2. Escape of cerebrospinal fluid through the nose.
noun persistent watery mucus discharge from the nose (as in the common cold)