كُظْرُ القَوْسِ

The notch in the curved extremity of the bow, in which is the string; (As, S;) the notch of the bow, into which falls the ring of the string: (A, K:) plural [of pauc.] أَكْظَارٌ (A) and [of mult.] كِظَارٌ and كِظَارَةٌ. (TA.)

كُظْرُ الزَّنْدَةِ The notch [from which the fire is produced] in the [piece of wood called] زندة. You say النَّارُ تَسِيلُ مِنْ كُظْرِ الزَّنْدَةِ Fire flows from the notch of the زندة. (A.)