galloner

plural galloners

1. in compoundsA container holding or measuring the specified number of gallons.

   He found that the “one galloner” was inadequate, so he splurged and purchased a 400 gallon tank truck to deliver gasoline to his rural customers.

   2018 August 16, ohtadmin, “100 years in the making”, in Pioneer Tribune

   1 more example

   For Kaitlin Self, a University of Florida junior and "two galloner" - meaning she's already donated two gallons of blood - news of the new rule was heartening.

   2013 August 4, Kristine Crane, “Good news for blood supply: Those with tattoos needn't wait to donate”, in The Gainesville Sun