The September 1973 issue of the Reader's Digest challenged its readers to name ten parts of the body spelled with three letters each. The magazine predicted that few readers would be able to think of more than seven three-letter parts. The ten names it had in mind, as I recall, were ARM, EAR, EYE, GUM, HIP, JAW, LEG, LIP, RIB, AND TOE.
Borgmann, Dmitri A.
Word Ways: Vol. 19
, Article 12.
Available at: http://digitalcommons.butler.edu/wordways/vol19/iss1/12