From The Collaborative International Dictionary of English v.0.48 [gcide]:
Ventricle \Ven"tri*cle\, n. [L. ventriculus the stomach, a
ventricle, dim. of venter the belly: cf. F. ventricule. See
{Ventral}.]
1. (Anat.) A cavity, or one of the cavities, of an organ, as
of the larynx or the brain; specifically, the posterior
chamber, or one of the two posterior chambers, of the
heart, which receives the blood from the auricle and
forces it out from the heart. See {Heart}.
[1913 Webster]
Note: The principal ventricles of the brain are the fourth in
the medulla, the third in the midbrain, the first and
second, or lateral, ventricles in the cerebral
hemispheres, all of which are connected with each
other, and the fifth, or pseudoc[oe]le, situated
between the hemispheres, in front of, or above, the
fornix, and entirely disconnected with the other
cavities. See {Brain}, and {C[oe]lia}.
[1913 Webster]
2. The stomach. [Obs.]
[1913 Webster]
Whether I will or not, while I live, my heart beats,
and my ventricle digests what is in it. --Sir M.
Hale.
[1913 Webster]
3. Fig.: Any cavity, or hollow place, in which any function
may be conceived of as operating.
[1913 Webster]
These [ideas] are begot on the ventricle of memory.
--Shak.
[1913 Webster] Ventricose
From WordNet (r) 3.0 (2006) [wn]:
ventricle
n 1: one of four connected cavities in the brain; is continuous
with the central canal of the spinal cord and contains
cerebrospinal fluid
2: a chamber of the heart that receives blood from an atrium and
pumps it to the arteries [syn: {ventricle}, {heart
ventricle}]
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