أَرْشَحُ
1.
[More, and most, sweating].
2.
[Hence,] هُوَ أَرْشَحُ فُوءَادًا (tropical:) He is most largely endowed with sharpness, or acuteness, of mind, or with quickness of intelligence, understanding, sagacity, skill, or knowledge: (K, TA:) as though sweating therewith. (TA.)