I.down1[美 daʊn, 英 daʊn]副down often appears as the second element of certain verb structures in English (back down, clamp down, tone down, etc). For translations, see the relevant verb entry (back, clamp, tone, etc).
Each song seemed to be carefully honed, with the band's craftman-ship allowing them to gradually sand down rough edges, refining their voice on their travels.