Drill (English spelling) drill

Japanese: ドリル（英語表記）drill

Also called a drill. A cutting tool used to make holes in workpieces. It is usually attached to a drill press and rotated while being pressed to make holes. Various types are manufactured depending on the material, shape, and dimensions of the workpiece, but they can be broadly categorized as twist drills, flat drills, and special drills. Twist drills are the most common, and this type is what is simply referred to as a drill. This drill consists of a body and a shank, and the body has multiple twist flutes and a pair of cutting edges (tip). The twist flutes serve as a passage for discharging chips. Drill materials used are carbon tool steel, alloy tool steel, high-speed steel, and cemented carbide, but high-speed steel is widely used due to its cutting ability and lifespan.

drill
Mandrillus leucophaeus; drill

Primates, Cercopithecidae family. Similar in body shape and size to the mandrill, but easily distinguished by the lack of color on its face (its face is black and bare, with white fur around it). Usually lives in small family groups, led by a male leader. Males have large canines and are aggressive, sometimes attacking humans. Omnivorous. Lives in forests in western Africa.

drill
Delille, Jacques, abbé

Born: June 22, 1738 in Egbers
[Died] May 1, 1813, Paris. French poet and priest. He became famous for his translation of Virgil's The Agricultural Poems (1769). His other works include the collection of poems Les Jardins (82) and a translation of Milton's Paradise Lost.

drill
drill

Repetitive exercises that train and develop the mechanical and elementary abilities of children and students, such as calculation, writing, and manual skills.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

きり (錐) ともいう。工作物に穴をあけるときに用いる切削用工具。通常はボール盤に取付け，回転させながら押込んで穴あけする。工作物の材質，形状，寸法などに応じて各種のものが製作されているが，大別すれば，ねじれぎり (ツイストドリル) ，平ぎり，特殊ぎりになる。ねじれぎりが最も一般的で，単にドリルといえばこの型をさす。このドリルは本体およびシャンク (柄) 部から成り，本体には複数のねじれ溝と，1対の切刃 (先端部) がある。ねじれ溝は切り屑の排出路の役目をする。ドリル材には，炭素工具鋼，合金工具鋼，高速度鋼，超硬合金が用いられるが，切削能力や寿命の点から高速度鋼が広く使用されている。