Brown Driver Briggs

 1. to search, search for, search out, examine, investigate
  1) (Qal)
1a1. to search (for)
1a2. to search through, explore
1a3. to examine thoroughly
  2) (Niphal)
1b1. to be searched out, be found out, be ascertained, be examined
  3) (Piel) to search out, seek out