Hypertext Webster Gateway: "vestibulum"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Vestibulum \Ves*tib"u*lum\, n.; pl. {Vestibula}. [L.,
vestibule.] (Zo["o]l.)
A cavity into which, in certain bryozoans, the esophagus and
anus open.
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.