ventricle (n.)youdaoicibaDictYouDict[ventricle 词源字典]
late 14c., "small chamber or cavity within a bodily organ," especially of the heart, from Latin ventriculus (in reference to the heart, ventriculus cordis), literally "little belly," diminutive of venter (genitive ventris) "belly" (see ventral).[ventricle etymology, ventricle origin, 英语词源]