cord, rope, searching, inquiring
索 centers on the idea of a cord or rope used to seek or draw something in, which extends naturally to searching and inquiring—like casting a line to find what is hidden.
索 originally depicted a cord or rope, with the top part representing a twisted fiber and the bottom 糸 reinforcing the thread/rope meaning. The searching sense likely developed from the action of using a rope to probe or seek.
The top looks like a crown of twisted fibers, and the bottom is 糸 (thread). Imagine a sturdy rope made by twisting many threads together, used for searching and pulling things in.
For サク, picture using a rope to sack up items while searching: sack -> サク, and the rope helps you gather what you find.
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looking up (e.g. a word in a dictionary); search (e.g. on the Internet); retrieval (of information); reference
search (esp. for someone or something missing); manhunt
search; lookup; hunt; (item of) research; exploration; investigation
groping (for); fumbling around (for); searching (for an answer, solution, etc.); trying to find
searching for the enemy
counter for bamboo tiles
rope; cord
index (in a book)
speculation; thinking; meditation
inquiry into; enquiry into; prying (into); investigation; search; exploration
steel cable; steel wire rope
groping in the dark; exploring new avenues without having any clues
fuzzy reference; ambiguous search; ambiguous retrieval
diffuse axonal injury; DAI
image search
web search
web search
keyword search
cross-language information retrieval; CLIR
global search