索 - cord, rope, searching

looking up (e.g. a word in a dictionary); search (e.g. on the Internet); retrieval (of information); reference

search criteria

speculation; thinking; meditation

index (in a book)

groping (for); fumbling around (for); searching (for an answer, solution, etc.); trying to find

search (esp. for someone or something missing); manhunt

search; lookup; hunt; (item of) research; exploration; investigation

notochord (rudimentary spinal cord)

search warrant

keyword search

chordate

cross-language information retrieval; CLIR