From an unused root apparently meaning to hollow out; a channel or watering-box; by resemblance a ringlet of hair (as forming parallel lines) -- gallery, gutter, trough.
H7298. rahat
I. [ר֫הַט] noun [masculine] trough (where water is collected ?); — for watering cattle; — plural רְהָטִים Genesis 30:38, 41; Exodus 2:16 (all J).
II. רהט (√ of two following; perhaps Aramaic רְהַט = רוּץ run, flow).
II. [רַ֫הַט] noun [masculine] dubious, Thes and most lock of hair (? from flowing down); — plural רְהָטִים Cant 7:6.