A pincerlike instrument for an endoscope, comprising a flexible sheath, a pair of limbs, and a water supply channel. The pair of limbs, being provided at the fore-end of the flexible sheath, opens and closes as a pincers by remote operations from the base-end of the flexible sheath. The water supply channel is formed inside the flexible sheath for ejecting water from the fore-end of the flexible sheath by supplying the water from the base-end of the flexible sheath. A water ejection opening for the water supply channel is disposed at the base portion of the pair of limbs between the two limbs with the water ejection opening facing forward.