| sibling | Brother or sister. (13 Nov 1997) |
|---|---|
| sibling relations | Interactions and relationships between sisters and/or brothers. The concept also applies to animal studies. (12 Dec 1998) |
| sibling rivalry | Jealous competition among children, especially for the attention, affection, and esteem of their parents; by extension, a factor in both normal and abnormal competitiveness throughout life. (05 Mar 2000) |