transitive verb
: to circulate water or a cleansing fluid through (the cooling system of an automobile) in reverse of the normal circulation to dislodge an accumulation of sludge
transitive verb
: to circulate water or a cleansing fluid through (the cooling system of an automobile) in reverse of the normal circulation to dislodge an accumulation of sludge
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012