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).
Splendid sunbirds are 15cm long, and have medium-long thin down-curved bills and brush-tipped tubular tongues, both adaptations to their nectar feeding.