teem2

 
Pronunciation: /tiːm/

verb

[no object]
  • (of water, especially rain) pour down; fall heavily: with the rain teeming down at the manor, Italy seemed a long way off

Origin:

Middle English: from Old Norse tœma 'to empty', from tómr 'empty'. The original sense was 'to empty', specifically 'to drain liquid from, pour liquid out'; the current sense (originally dialect) dates from the early 19th century