From an unused root meaning to take refuge; a rift in rocks -- cleft.
H2288. chagavim
[חֲגָוִים] noun masculine plural places of concealment, retreats, as abode of dove הַסֶּלַע בְּחַגְוֵי יוֺנָתִי Song of Solomon 2:14 (in metaphor); also, hyperbole, as abode of Edom בח ׳שֹׁכְנִּי (ה)סלע Jeremiah 49:16; Obadiah 3..
חגל (√ of following; Arabic , hobble, hop, whence partridge, compare Syriac , , id.)