This is the 10321st most frequent Japanese word.
食指
"食指" (shokushi) refers to the index finger.
In this context, '食指' metaphorically represents interest or desire to participate in something.
彼はその計画に食指を動かしたようだ。
He seems to have shown interest in the plan.
Here, '食指' is used to indicate absence of desire or interest in pursuing something.
そのアイデアに対して誰も食指を伸ばさなかった。
No one showed any interest in that idea.
In this sentence, '食指' refers to individuals developing an enthusiasm or consideration for something new.