rocker -
a curved support that permits the supported object to rock to and fro
support a military operation (often involving new supplies of men and materiel) to strengthen a military force or aid in the performance of its mission; "they called for artillery support"
bikers,
rockers originally a British youth subculture that evolved out of the teddy boys in the 1960s; wore black leather jackets and jeans and boots; had greased hair and rode motorcycles and listened to rock'n'roll; were largely unskilled manual laborers
rocker -
a trough that can be rocked back and forth; used by gold miners to shake auriferous earth in water in order to separate the gold
rocker -
an attendant who rocks a child in a cradle
attendant,
attender,
tender a person who is present and participates in a meeting; "he was a regular attender at department meetings"; "the gathering satisfied both organizers and attendees"