1600400 jmdict A [id=2182669]
飲み込む[ichi1]；呑み込む[news2,nf40]；飲みこむ；呑みこむ；のみ込む；飲込む
のみこむ[ichi1,news2,nf40]
[1][v5m,vt]
  to swallow; to gulp down
[2][v5m,vt]
  to understand; to grasp; to take in; to catch on; to learn
[3][v5m,vt]
  to engulf; to swallow up
[4][v5m,vt]
  to be filled with (people); to contain
[5][v5m,vt]
  to swallow (one's words); to suppress (a yawn, tears, etc.); to stifle; to hold back