flark
The term "flark" does not have a widely recognized or established meaning in standard English dictionaries or common technical lexicons. It is possible that "flark" is a neologism, a portmanteau word, a typo, or a term specific to a particular subculture, fictional universe, or informal context.
In some informal settings, "flark" might be used as a playful or nonsensical exclamation, similar to "flub"
Without further context regarding where "flark" was encountered, it is difficult to provide a precise definition.