1) Capacity of some trucks 2) Indefinite quantity 3) The act of storing in tanks 
• (n.) The capacity or contents of a tank or tanks. • (n.) Waste matter from tanks; esp., the dried nitrogenous residue from tanks in which fat has been rendered, used as a fertilizer. • (n.) The act or process of putting or storing in tanks. • (n.) Fees charged for storage in tanks.
Of a liquid-fueled rocket, the aggregate of the tanks carried by the rocket.
Tank'age noun 1. The act or process of putting or storing in tanks. 2. Fees charged for storage in tanks. 3. The capacity or contents of a tank or tanks. 4. (Agriculture) Waste matter from tanks; esp., the dried nitrogenous residue from tanks in which fat has b...
[n] - the quantity contained in (or the capacity of) a tank or tanks 2. [n] - the charge for storing something in tanks 3. [n] - the act of storing in tanks
noun the act of storing in tanks