crypts of lieberkuehn

from The Collaborative International Dictionary of English v.0.48

Lieberkuhn's glands \Lie"ber*k["u]hn's glands`\
   (l[=e]"b[~e]r*k[.u]nz gl[a^]ndz`) n. [See {Lieberkuehn}.]
   (Anat.)
   The simple tubular glands of the small intestines; -- called
   also {crypts of Lieberkuehn}.
   [1913 Webster]