1
telepathy;tacit understanding;thought transference;communion of mind with mind
彼とはツーと言えばカーの仲だよ。以心伝心の仲とでも言っておこう。
He and I have a near-telepathic understanding of each other. No sooner does one of us say something than the other is already responding.
2
non-verbal Zen Buddhist transmission to a disciple of the central tenets of Buddhism