noun, noun or participle which takes 'suru'
put heads together and confer; go into a huddle
A yojijukugo used when people gather closely to discuss something, often with a nuance of secretive or intensive consultation.
役員たちは鳩首協議して、次の戦略を練った。
The executives put their heads together and worked out the next strategy.
When a problem arises, they immediately go into a huddle.