Real Dictionary

punk
Punk or punk rock is rock music that is played in a fast, loud, and aggressive way and is often a protest against conventional attitudes and behaviour. Punk rock was particularly popular in the late 1970s.

punk in American English 1
any substance, as decayed wood, that smolders when ignited, used as tinder; esp., a chemically treated fungous substance shaped into slender, fragile, light-brown sticks: the glowing tips are used to light fireworks, etc.
noun: any prepared substance, usually in stick form, that will smolder and can be used to light fireworks, fuses, etc

punk in American English 2
a prostitute
poor or bad in condition, quality, etc.
adjective: poor in quality or condition
noun: something or someone worthless or unimportant

punk in British English 1
adjective: inferior, rotten, or worthless
noun: a youth movement of the late 1970s, characterized by anti-Establishment slogans and outrageous clothes and hairstyles

punk in British English 2
noun: dried decayed wood that smoulders when ignited: used as tinder