Meanings

precision engineering

airtightness

non-disclosure agreement

close coverage reportage

secret meeting

secret military camp (Korea)

illicit traffic

dense planting

compressional wave

locked-room murder (e.g. in murder mystery fiction)

secret order of the Emperor

Cabinet Secretariat classified fund

secretive

secure computation

contact print

precision agriculture

(prisoner's) right of private access to a lawyer

ultra-precision

high-precision

tantrism