What is the meaning of Taxer?

One who taxes.

One of two officers chosen yearly to regulate the assize of bread, and to see the true gauge of weights and measures is observed.

to tax, to impose a tax on

to accuse [with direct object ‘someone’ and de ‘of something’]

to call, to label [with direct object ‘someone’ and de (+ object or adjective) ‘as something’]

first-person singular present passive subjunctive of taxō

to tax, to impose a tax on

to shut up (be quiet)

Source: wiktionary.org