He leaped, or sprang, upon him, or at him; he assaulted or assailed him; synonym سَاوَرَهُ (S, K) and ثَاوَرَهُ. (K, article ثور) and صَاوَلَهُ. (K, article صول.)
2.
[Also, perhaps, He contended with him in leaping, jumping, springing, or bounding.]
3.
[واثبه is also mentioned in the TA as having a signification not explained in the K: apparently, He contended with him in hastening to a thing.]