slew1
  
  v.
  - turn or slide violently or uncontrollably.
- 
[usu. as noun slewing]
 (of an electronic device) give a maximum response to a sudden large increase in input.
n.
 a slewing movement.
Etymology
  C18 (orig. in naut. use): of unknown origin.
 
  
    
slew3
  
  n.
 informal a large number or quantity.
Etymology
  C19: from Ir. sluagh.