ر ک نr-k-n
(ک) رَكُنَ يَرْكُنُ رَكَانَةًrakuna yarkunu rakānatan: to be dignified, to be dependable.
(س) رَكِنَ يَرْكَنُ رُكُوْنًاrakina yarkanu rukūnan: to incline towards someone, to lean towards. ﴿وَلَا تَرْكَنُوْٓا اِلَي الَّذِيْنَ ظَلَمُوْا فَتَمَسَّكُمُ النَّارُ﴾ (Hūd 11:113); ﴿لَقَدْ كِدْتَّ تَرْكَنُ اِلَيْهِمْ شَيْـًٔا قَلِيْلًا﴾ (Al-Isrāʾ 17:74)
رُكْنٌrukn pl. اَرْكَانٌarkān (noun, ism dhāt): anything relied or leaned upon for strength, a support; it also occurs as a collective noun (ism jamʿ), as in رُكْنُ الرَّجُلِruknu ar-rajul: a man's support, i.e. his people. ﴿اَوْ اٰوِيْٓ اِلٰى رُكْنٍ شَدِيْدٍ﴾ (Hūd 11:80); ﴿فَتَوَلّٰى بِرُكْنِهِۦ﴾ (Adh-Dhāriyāt 51:39)