adjectival noun:

• serious; earnest

noun:

• real sword (as opposed to unsharpened or wooden practice weapon)

noun:

• dojo (hall used for martial arts training)
• manda (place of Buddhist practice or meditation, esp. the place under the bodhi tree where Buddha attained enlightenment) - abbreviation - Buddhism term ➜ 菩提道場

noun:

• training partner
• training hall (esp. one made of wooden planks and used for dancing practice)

godan ~む verb / transitive:

• to drive in (e.g. nail, stake); to hammer in
• to hit (a ball, etc.); to drive; to smash
• to fire into (e.g. a crowd); to launch (e.g. missiles); to lob (e.g. grenades) ➜ 撃ち込む
• to input (data); to enter
• to devote oneself to; to go heart and soul into; to throw oneself into; to go head over heels for
• to practice hitting (baseball, tennis, etc.) - Sports term
• to hit (an opponent in kendo, boxing, etc.); to get a blow in - Martial Arts term
• to invade one's opponent's territory (in the game of go); to place a stone in an opponent's formation
• to pour (concrete, etc.) into a form

expression / ~する verb (irregular):

• to decide to
• to pretend that - after the past tense form of a verb
• to make a practice of doing; to make it a rule to - as 〜ことにしている