, (S, M, A, &c.,) aorist
رَسُبَ, (M, A, &c.,) verbal noun رُسُوبٌ (S, M, A, Mgh, Msb, K) and رَسْبٌ; (Msb;) and رَسُبَ, aorist
رَسُبَ; (M, A, K;) It (a thing, S, Msb) sank, or subsided, (S, M, A, Mgh, Msb, K,) in water [&c.]. (S, M, A, Mgh, K.)
2.
[Hence,] رَسَبَتْ عَيْنَاهُ (tropical:) His eyes sank [in their sockets]. (S, A.)
3.
And السَّيْفُ يَرْسُبُ فِى الضَّريبَةِ (tropical:) The sword sinks, or disappears, in the thing struck with it. (TA.)