1 cluster, group, bunch, clump, pack, herd, crowd, throng, mass:
Everyone got into a huddle, trying to keep warm.
2 meeting, conference, discussion, consultation:
They were in a huddle, deciding what to do next.
3 cluster, gather, crowd or press together, throng or flock together, nestle, jam or cram together, squeeze together:
We huddled in basements during air raids.
4 meet, discuss, confer, consult:
Let's huddle on this question of the advertising schedule.