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).
Typical prayer rug sizes are approximately 2.5x4 ft - 4x6 ft, enough to kneel above the fringe on one end and bend down and place the head on the other.