جم

R. Q. 2 تَجَمْجَمَ جمجم تجمجم : see R. Q. 1. ― -b2- Hence, تجمجم عَنِ الأَمْرِ (tropical:) [ He held back from the thing, not daring to do it; ] he did not dare to do the thing. (Ham p. 240.)