This word has two flavors. Literally, it's a tiny fish, the goby, the kind you might overlook. Figuratively, and more commonly used in a literary or insulting way, it refers to a 'small fry'—someone insignificant or from a low social class. It's like calling someone a 'nobody'. It's a bit harsh, a classic panlalait from a dramatic teleserye. 'Sino ka para utusan ako, isa ka lang namang talimusak!'