مُجْتَمَعٌ

1.
[A place in which a thing becomes collected, brought together, or the like; or in which things have become so; where they collect themselves, come together, or unite; or in which they are comprised, or contained; a place in which is a collection of things]. You say, البَيْضَةُ مُجْتَمَعُ الوَلَدِ [The egg is that which comprises the young bird]. (Mgh in article بيض.) And مُجْتَمَعُ المَوْتِ signifies the same as حَوْضُ المَوْتِ, which see, in article حوض. (TA in that article)
2.
[Also The collective mass, or whole, of the hair of the head: (see جُمَّةٌ, in three places:) مُجْتَمَعُ شَعْرِ الرَّأْسِ meaning the whole head of hair: see also مَجْمَعٌ.]

Perseus ID: n6333