Pi-hahiroth
    place where the reeds grow (LXX. and Copt. read "farmstead"),
    the name of a place in Egypt where the children of Israel
    encamped (Ex. 14:2, 9), how long is uncertain. Some have
    identified it with Ajrud, a fortress between Etham and Suez. The
    condition of the Isthmus of Suez at the time of the Exodus is
    not exactly known, and hence this, with the other places
    mentioned as encampments of Israel in Egypt, cannot be
    definitely ascertained. The isthmus has been formed by the Nile
    deposits. This increase of deposit still goes on, and so rapidly
    that within the last fifty years the mouth of the Nile has
    advanced northward about four geographical miles. In the maps of
    Ptolemy (of the second and third centuries A.D.) the mouths of
    the Nile are forty miles further south than at present. (See EXODUS.)



 Pi-hahiroth, the mouth; the pass of Hiroth