'Guardian spirit' definitions:

Definition of 'guardian spirit'

(from WordNet)
noun
An angel believed to have special affection for a particular individual [syn: guardian spirit, guardian angel]

Definition of 'Guardian spirit'

From: GCIDE
  • Guardian \Guard"i*an\ (g[aum]rd"[i^]*an or g[aum]rd"yan; 106), a. Performing, or appropriate to, the office of a protector; as, a guardian care. [1913 Webster]
  • Feast of Guardian Angels (R. C. Ch.) a church festival instituted by Pope Paul V., and celebrated on October 2d.
  • Guardian angel. (a) The particular spiritual being believed in some branches of the Christian church to have guardianship and protection of each human being from birth. (b) Hence, a protector or defender in general. --O. W. Holmes.
  • Guardian spirit, in the belief of many pagan nations, a spirit, often of a deceased relative or friend, that presides over the interests of a household, a city, or a region. [1913 Webster]