Core sense — a thing hidden and unseen; rain; plants, or herbagegenerated
1the rain—خَبْءُ السَّمَآءِ
A thing that is hidden, or concealed, and unseen. Also خِبْءٌ and خُبْأَةٌ, of the measure فُعْلَةٌ, from الخبأ [or rather الخَبْءُ], like غُرْفَةٌ and قُبْضَةٌ from الغَرْفُ; and القَبْضُ and خَبِىْءٌ and خَبِيْئَةٌ, the plural of this last being خَبَايَا.
the plants, or herbage—خَبْءُ الأَرْضِ
the seed which the sower has hidden in the earth—خَبَايَا الأَرْضِ
Or what God has hidden in the mines of the earth.
الَّذِى يُخْرِجُ الخَبْءَ فِى السَّمٰوَاتِ وَالأَرْضِ, in the Qur'ān [27:25], is held by Az to mean: Who knows what is unseen in the heavens and the earth; this agrees with Fr's explanation of الخَبْءُ.
Qur’ānic occurrences خَبْء
27:25
أَلَّا يَسْجُدُوا۟ لِلَّهِ ٱلَّذِى يُخْرِجُ ٱلْخَبْءَ فِى ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضِ وَيَعْلَمُ مَا تُخْفُونَ وَمَا تُعْلِنُونَ"(Kept them away from the Path), that they should not worship Allah, Who brings to light what is hidden in the heavens and the earth, and knows what ye hide and what ye reveal.
Occurrences of this form in the Qur’ān, not Lane’s choice of verse. They show the word in use; they do not say which sense above applies. Where more occur than are shown, the shortest āyāt are chosen.
Show Lane's original text
(S, Msb, K) and خِبْءٌ (TA) and خُبْأَةٌ , of the measure فُعْلَةٌ from الخبأ [or rather الخَبْءُ ], like غُرْفَةٌ and قُبْضَةٌ from الغَرْفُ and القَبْضُ , (Har p. 426,) and خَبِىْءٌ (S, K) and خَبِيْئَةٌ , (K,) of which last the pl. is خَبَايَا , (TA,) A thing that is hidden, or concealed, (S, * Msb, K,) and absent, or unseen. (K.) [Hence,] خَبْءُ السَّمَآءِ The rain. (Th, S, K.) And خَبْءُ الأَرْضِ The plants, or herbage. (S, K.) And خَبَايَا الأَرْضِ The seed which the sower has hidden in the earth: or what God has hidden in the mines of the earth. (TA, from a trad.) الَّذِى يُخْرِجُ الخَبْءَ فِى السَّمٰوَاتِ وَالأَرْضِ , in the Kur [xxvii. 25], is held by Az to mean Who knoweth what is unseen in the heavens and the earth; agreeably with an explanation of الخَبْءُ by Fr. (TA.)