末伏

mòfú
the third of the three annual periods of hot weather (三伏 sānfú), which typically runs over the middle ten days of August

CEDICT

三伏的最后一伏。自夏至后第三庚日起，每十日为一伏，第三个十日称为「末伏」。

重編國語辭典

Entry Composition

1 末 mò
  1. tip
  2. end
  3. final stage
  4. latter part
  5. inessential detail
  6. powder
  7. dust
  8. opera role of old man
2 伏 fú
  1. to lean over
  2. to fall (go down)
  3. to hide (in ambush)
  4. to conceal oneself
  5. to lie low
  6. hottest days of summer
  7. to submit
  8. to concede defeat
  9. to overcome
  10. to subdue
  11. volt