سِيفٌ

The shore (سَاحِل) of the sea or of a great river: (S, M, O, Mgh, Msb, K:) and the side (سَاحِل) of a valley: or [the margin of the shore of a sea or of a great river; for it is added,] every سَاحِل has a سِيف: or السِّيفُ is applied only to the سِيف [or sea-shore, or seaboard,] of 'Omán: (K:) [if otherwise applied,] its plural is أَسْيَافٌ. (S, M.) One says, هُمْ أَهْلُ أَسْيَاف ٍ وَأَرْيَافٍ [They are people of the shores of the sea or of a great river, and of the tracts of towns, or villages, and cultivated lands]. (TA.)

Also A thing that adheres to the lower parts, or roots, of palm-branches, like [the fibres called] لِيف, but not the same as لِيف: (S: in which is added, “ this I have taken from a book, without having heard it: ”) or the [fibrous substance called] لِيف, (K,) or the thick, or coarse, لِيف, (M,) adhering to the lower parts, or roots, of palm-branches, which is the worst sort thereof, [i. e. of ليف,] (M, K,) and the harshest, and coarsest. (M.) [See شِيفٌ.]