expression, ichidan verb
put heads together; gather for discussion; huddle
Idiomatic expression meaning to come together and discuss something, often in a small group. The image is of people leaning in so their foreheads nearly touch.
問題を解決するために、みんなで額を集めて話し合った。
To solve the problem, we all put our heads together and discussed it.
新しい企画について、スタッフが額を集めている。
The staff are huddling together to discuss the new project.