Webster's Revised Unabridged Dictionary · 1913

Uterine

Uterine (?; 277) , adjective

[Latin uterinus born of the same mother, from uterus womb: compare French utérin.]

1.
Of or instrument to the uterus, or womb.
2.
Born of the same mother, but by a different father.
Walter Pope, uterine brother to Dr. Joh. Wilki{not transcribed}. — Wood