Cutting tool

A cutting tool for machining a work material, comprising:

• a holder;
• a cutting insert having a cutting edge and mounted on the holder;
• and
• an ejecting portion which ejects a fluid from a plurality of ejection ports toward the cutting edge, wherein
• the plurality of ejection ports are aligned linearly in a predetermined aligning direction such that the fluid is ejected toward a region including the cutting edge and extending in a predetermined direction,
• the aligning direction is defined by a straight line passing through a center of each of the plurality of ejection ports and perpendicular to an upper surface of the holder,
• each ejection port of the plurality of ejection ports has an ejection region which extends linearly along a direction in which the fluid is ejected therefrom,
• the ejecting portion is configured such that the ejection region extending from one of the plurality of ejection ports does not overlap the ejection region extending from another one of the plurality of ejection ports on a front side of the cutting edge,
• the cutting insert is mounted on the holder through a mounting member, and
• the mounting member has a plurality of insert pockets and the cutting insert is held in one insert pocket among the plurality of insert pockets.