noun
or knapsack pump
: a spraying apparatus consisting of a knapsack tank together with pressurizing device, line, and sprayer nozzle, used chiefly in fire control and in spraying fungicides or insecticides
noun
or knapsack pump
: a spraying apparatus consisting of a knapsack tank together with pressurizing device, line, and sprayer nozzle, used chiefly in fire control and in spraying fungicides or insecticides
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012