Definition: A sheath; a theca; as, the vagina of the portal vein.
Definition: Specifically, the canal which leads from the uterus to the
external orifice if the genital canal, or to the cloaca.
Definition: The terminal part of the oviduct in insects and various
other invertebrates. See Illust., of Spermatheca.
Definition: The basal expansion of certain leaves, which inwraps the
stem; a sheath.
Definition: The shaft of a terminus, from which the bust of figure
seems to issue or arise.