Wiktionary
n. A style of English rock music from the early 1970s, distinguished by the glamorous, glittery costumes of its performers and its bouncy beat and lyrics.
Wikipedia
Glam rock (also known as glitter rock) is a style of rock and pop music that developed in the United Kingdom in the early 1970s which was performed by singers and musicians who wore outrageous clothes, makeup, and hairstyles, particularly platform-soled boots and glitter. The flamboyant costumes and visual styles of glam performers were often camp or androgynous, and have been connected with new views of gender roles.
Glam rock peaked during the mid-1970s with artists including Marc Bolan & T. Rex, David Bowie, Sweet, Roxy Music and Gary Glitter in the UK, and the Alice Cooper group, New York Dolls, Lou Reed, Iggy Pop and Jobriath in the US. It declined after the mid-1970s, but had a major influence on other genres including punk rock, glam metal, New Romanticism, and gothic rock and has sporadically revived since the 1990s.
Usage examples of "glam rock".
When they sat down to eat, all obediently be-wigged like reluctant delegates to a Glam Rock convention, they discovered placecards between the cutlery, bearing what looked worryingly like lyrics.