sleuth Meaning, Definition & Usage

  1. noun a detective who follows a trail
    sleuthhound.
  2. verb watch, observe, or inquire secretly
    spy; snoop; stag.

WordNet

Sleuth noun
Etymology
Icel. sl&omac;&edh;. See Slot a track.
Definitions
  1. The track of man or beast as followed by the scent. Scot. Halliwell.

Webster 1913