Noun, pl. McBurney’s points
1. The name given to the point over the right side of the abdomen that is one-third of the distance from the anterior superior iliac spine to the umbilicus. This point roughly corresponds to the most common location of the base of the appendix where it is attached to the cecum. (wikipedia.org)
2. A point of the skin one-third of the distance from the ASIS to the umbilicus. (wiktionary.org)
3. A point on the abdominal wall that lies between the navel and the right anterior superior iliac spine and that is the point where most pain is elicited by pressure in acute appendicitis. (merriam-webster.com)
4. A point one third of the way along a line drawn from the hip to the umbilicus; the point of maximum sensitivity in acute appendicitis. (wordnetweb.princeton.edu)
Word origin: Named after Charles McBurney (1845–1913), American surgeon and pioneer in the diagnosis and treatment of appendicitis. cBurney first described the pressure point used in the diagnosis of appendicitis in 1889. It was subsequently named in his honor. (merriam-webster.com)