What is the meaning of Pisser?

One who pisses.

That which pisses, particularly a penis.

Someone or something either viewed as good, impressive or remarkable.

A disappointing or frustrating situation or event.

An extremely amusing person or thing.

A toilet or urinal.

A pub.

Synonym of piss clam.

one who pisses

penis

amateur

to piss

to pour with (some liquid)

alternative form of pissere

to piss (excrete urine)

present of pisse

Source: wiktionary.org