وهن1 وَهَنَ He was, or became, weak, or infirm, in an affair, and in operation, and in body; (Msb:) and so said of a bone: (Bd, and Jel in xix. 3:) and he was, or became, languid, languid and faint, or lax in the joints; (TA, Bd in iii.140;) enervated, unnerved, or broken in energy; (Bd, ubi suprà;) cowardly. (TA, Jel in iii. 140.) b2:  See also 4.2 وَهَّنَ see 4.4 أَوْهَنَهُ He, or it, weakened him: [rendered him languid, languid and faint, or lax in the joints; enervated him, unnerved him, or broke his energy; rendered him cowardly: (see وَهَنَ:)] (S, Msb, K:) and ↓ وَهَنَهُ, (S, Mgh, Msb, K,) but the former is the better, (Msb,) and ↓ وَهَّنَهُ. (S, K.) وَهْنٌ The period about midnight; (S, K;) or the time after an hour, or a short period, (سَاعَة,) of the night: (JK, K, TA:) or when the night is departing. (S.) See إِنْىٌ.عِرْقُ الوَاهِنَةِ The cephalic vein: see فَلِيقٌ.وَهْنَانَةٌ I. q.وَنَاةٌ, q. v.; and see أَنَاةٌ.تَوَهُّنٌ Weak, languid, unable to rise: see عُدَوَآءُ.