[{"Bold_text": "noun", "List Items": ["a cylindrical wooden container with slightly bulging sides made of staves hooped together, and with flat, parallel ends.", "the quantity that such a vessel of some standard size can hold: for most liquids, 31½ U.S. gallons (119 L); for petroleum, 42 U.S. gallons (159 L); for dry materials, 105 U.S. dry quarts (115 L).:bbl", "any large quantity:a barrel of fun.", "any container, case, or part similar to a wooden barrel in form.", "Ordnance.the tube of a gun.", "Machinery.the chamber of a pump in which the piston works.", "a drum turning on a shaft, as in a weight-driven clock.", "Horology.the cylindrical case in a watch or clock within which the mainspring is coiled.", "Ornithology Obsolete.a calamus or quill.", "the trunk of a quadruped, especially of a horse, cow, etc.", "Nautical.the main portion of a capstan, about which the rope winds, between the drumhead at the top and the pawl rim at the bottom.", "a rotating horizontal cylinder in which manufactured objects are coated or polished by tumbling in a suitable substance.", "any structure having the form of a barrel vault barrel vault.", "Also called throat .Automotive.a passageway in a carburetor that has the shape of a Venturi tube."]}, {"Bold_text": "verb (used with object)", "List Items": ["to put or pack in a barrel or barrels.", "to finish (metal parts) by tumbling in a barrel.", "Informal.to force to go or proceed at high speed:He barreled his car through the dense traffic."]}, {"Bold_text": "verb (used without object)", "List Items": ["Informal.to travel or drive very fast:to barrel along the highway."]}]