WordWeb Online

1. Lower in rank or importance
   - subordinate, subsidiary
    
2. Not intense
   "low-level radiation"
    
3. At a low level in rank or importance
   "a low-level job"; "low-level discussions"
    
4. Occurring at a relatively low altitude
   "a low-level strafing run";
   - low-altitude

See also: adjunct, assistant, associate, inferior, low, position, secondary, status, subordinate, under

Encyclopedia: Low-level