ص ب وṣ-b-w
(ن) صَبَا يَصْبُوْ صُبُوًّاṣabā yaṣbū ṣubuwwan: (1) to long for someone, to incline towards someone. ﴿وَاِلَّا تَصْرِفْ عَنِّيْ كَيْدَهُنَّ اَصْبُ اِلَيْهِنَّ﴾ (Yūsuf 12:33) (2) to incline towards childhood, to be under age.
صَبِيٌّṣabiyy (adjective on the pattern of فَعِيْلٌfaʿīl): one having the disposition of children, i.e. a child, a boy not yet of age. ﴿وَاٰتَيْنٰهُ الْحُكْمَ صَبِيًّا﴾ (Maryam 19:12)