intense concentration / a samadhi of perfect unity of body and mind in all activities (ekavyūha-samādhi).

one-line fact / one-line information / information in very few words

(informal) "not knowing even a millimeter": completely ignorant in regards to something

a well-informed opinion / an opinion

cloakroom, checkroom

claim check, temporary deposit certificate

a lump sum paid when a civil servant retires before reaching the number of years necessary to receive a pension; one of the benefits of the Onkyu Law

leave, furlough / temporary layoff

layoff system

hit and run (the military technique of attacking one place and then quickly moving to another before defenders can react)