سجّنهُ
1.
, verbal noun تَسْجِينٌ, i. q.
شَقَّقَهُ [He cut it, or divided it, lengthwise; clave it; split it; &c.]. (K.)
2.
And سجّن النَّخْلَ
He made the palmtrees to be such as are termed
سِلْتِين [or سِجِّين; i. e. he dug at their feet trenches to conduct the water to them when it did not reach to them]. (K.)