sib

/sɪb/

Other forms: sibs

Definitions of sib

1. noun

   one related by blood or origin; especially on sharing an ancestor with another
   synonyms: blood relation, blood relative, cognate

   type of:

   relation, relative

   a person related by blood or marriage
2. noun

   a person's brother or sister
   synonyms: sibling

   types:

   half blood

   one of siblings who have only one parent in common

   quad, quadruplet

   one of four children born at the same time from the same pregnancy

   quin, quint, quintuplet

   one of five children born at the same time from the same pregnancy

   triplet

   one of three offspring born at the same time from the same pregnancy

   twin

   either of two offspring born at the same time from the same pregnancy

   dizygotic twin, fraternal twin

   either of two twins who developed from two separate fertilized eggs

   identical twin, monozygotic twin, monozygous twin

   either of two twins developed from the same fertilized ovum (having the same genetic material)

   type of:

   relation, relative

   a person related by blood or marriage