Meaning of 駿河問 in Japanese

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Definition of 駿河問

とい(toi) 【問い ·問】

もん(mon) 【問】

(suf, ctr) counter for questions
彼女は試験で四問目をぬかしてしまった。
She left out the fourth question on the examination.

するがどい(surugadoi) 【駿河問い】

(n) Japanese bondage torture (hands and feet are behind the victim's back, and they are hanged from the ceiling with a rock on their back)