You can overdose on coffee if you drink about 30 cups in a brief period to get close to a lethal dosage of caffeine.
VENAE
VENA
vein, vena, venous blood vessel
(noun) a blood vessel that carries blood from the capillaries toward the heart; “all veins except the pulmonary vein carry unaerated blood”
Source: WordNet® 3.1
VENA
Ve"na, n.; pl. Venæ. Etym: [L. See Vein.]
Definition: A vein. Vena cava; pl. Venæ cavæ. Etym: [L., literally, hollow vein.] (Anat.) Any one of the great systemic veins connected directly with the heart.-- Vena contracta. Etym: [L., literally, contracted vein.] (Hydraulics) The contracted portion of a liquid jet at and near the orifice from which it issues.
– Vena portæ; pl. VenÆ portæ. Etym: [L., literally, vein of the entrance.] (Anat.) The portal vein of the liver. See under Portal.
Source: Webster’s Unabridged Dictionary 1913 Edition
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