Definition of "sib"

adjective:
- Having kinship or relationship; related by same-bloodedness; having affinity; being akin; kindred.
  
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noun:
- Kindred; kin; kinsmen; a body of persons related by blood in any degree.
  
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- A kinsman; a blood relation; a relative, near or remote; one closely allied to another; an intimate companion.
  
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- A sibling, brother or sister (irrespective of gender).
  
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- Any group of animals or plants sharing a corresponding genetic relation.
  
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- A group of individuals unilaterally descended from a single (real or postulated) common ancestor.
  
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verb:
- To bring into relation; establish a relationship between; make friendly; reconcile.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License