The Collaborative International Dictionary of English v.0.48:

Cauliculus \Cau*lic"u*lus\ (k[add]*l[i^]k"[-u]*l[u^]s), n.; pl.
   Cauliculi (-l[imac]). [L. cauliculus little stalk, dim. of
   caulis.] (Arch.)
   In the Corinthian capital, one of the eight stalks rising out
   of the lower leafage and terminating in leaves which seem to
   support the volutes. See Illust. of Corinthian order,
   under Corinthian.
   [1913 Webster]