رسب

1 رَسَبَ ذ , (S, M, A, &c.,) aor. رَسُبَ , (M, A, &c.,) inf. n. رُسُوبٌ (S, M, A, Mgh, Msb, K) and رَسْبٌ; (Msb;) and رَسُبَ, aor. 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.) ― -b2- [Hence,] رَسَبَتْ عَيْنَاهُ (tropical:) His eyes sank [in their sockets]. (S, A.) ― -b3- And السَّيْفُ يَرْسُبُ فِى الضَّريبَةِ (tropical:) The sword sinks, or disappears, in the thing struck with it. (TA.)