غلو

مِغْلًى ذ [in the CK مِغْلَاء] An arrow with which one raises the arm [ in shooting ] in order to exceed with it the usual limit, or nearly to do so: (K, * TA:) or, accord. to the M, that is used in striving to exceed the usual limit: also termed ↓ مِغْلَاةٌ: pl. مَغَالٍ. (TA.)