tipper

nouns

a person who leaves a tip
"a generous tipper"
tipper
is derived from
tip
is a type of (narrower)
person who makes a gift of property
bestower, conferrer, donor, giver, presenter
truck whose contents can be emptied without handling; the front end of the platform can be pneumatically raised so that the load is discharged by gravity
dump truck, dumper, tip truck, tipper, tipper lorry, tipper truck
is derived from
tip