رهف

4 ارهفهُ ذ , (JK, S, K, &c.,) inf. n. اـِرْهَافٌ; (Ham p. 93;) and ↓ رَهَفَهُ, aor. رَهَفَ , (K,) inf. n. رَهْفٌ; (TA;) He made it (a sword, S, K, &c., or a thing [of any kind], JK) thin, (S, MA, K,) or sharp or pointed; (JK, MA;) he made it (a sword) thin in the edge or point; (Ham p. 93;) he made it sharp, or keen. (MA.) ― -b2- [Hence,] أَرْهَفْتَ عَلَيْنَا لِسَانَكَ (tropical:) [ Thou hast sharpened against us thy tongue ]. (A, TA.) And أَرْهِفْ غَرْبَ ذِهْنِكَ لِمَا أَقولُ (tropical:) [ Sharpen the edge of thine intellect for what I say ]. (A, TA.)