Ta', Ra, Fa

Noun

(14:43:7) ṭarfuhum	their gaze	مُهْطِعِينَ مُقْنِعِي رُءُوسِهِمْ لَا يَرْتَدُّ إِلَيْهِمْ طَرْفُهُمْ
(27:40:14) ṭarfuka	your glance	أَنَا آتِيكَ بِهِ قَبْلَ أَنْ يَرْتَدَّ إِلَيْكَ طَرْفُكَ
(37:48:3) l-ṭarfi	(will be) companions of modest gaze	وَعِنْدَهُمْ قَاصِرَاتُ الطَّرْفِ عِينٌ
(38:52:3) l-ṭarfi	(will be) companions of modest gaze	وَعِنْدَهُمْ قَاصِرَاتُ الطَّرْفِ أَتْرَابٌ
(42:45:9) ṭarfin	a glance	يَنْظُرُونَ مِنْ طَرْفٍ خَفِيٍّ
(55:56:3) l-ṭarfi	(will be) companions of modest gaze	فِيهِنَّ قَاصِرَاتُ الطَّرْفِ لَمْ يَطْمِثْهُنَّ إِنْسٌ قَبْلَهُمْ وَلَا جَانٌّ

Noun

(3:127:2) ṭarafan	a part	لِيَقْطَعَ طَرَفًا مِنَ الَّذِينَ كَفَرُوا أَوْ يَكْبِتَهُمْ فَيَنْقَلِبُوا خَائِبِينَ
(11:114:3) ṭarafayi	(at the) two ends	وَأَقِمِ الصَّلَاةَ طَرَفَيِ النَّهَارِ وَزُلَفًا مِنَ اللَّيْلِ
(13:41:8) aṭrāfihā	its borders	أَوَلَمْ يَرَوْا أَنَّا نَأْتِي الْأَرْضَ نَنْقُصُهَا مِنْ أَطْرَافِهَا
(20:130:17) wa-aṭrāfa	(at the) ends	وَمِنْ آنَاءِ اللَّيْلِ فَسَبِّحْ وَأَطْرَافَ النَّهَارِ لَعَلَّكَ تَرْضَىٰ
(21:44:16) aṭrāfihā	its borders	أَفَلَا يَرَوْنَ أَنَّا نَأْتِي الْأَرْضَ نَنْقُصُهَا مِنْ أَطْرَافِهَا

This one is a bit trick as there seems not to be a clear correlation as before??
 but i am inclined to - based on logic at present to go for a general meaning if a  part, border

http://corpus.quran.com/qurandictionary.jsp?q=Trf

The word(s) "tarafa" appears 3 time(s) in 3 verse(s) in Quran. http://www.searchtruth.com/search.php?keyword=tarafa&chapter=&translator=6&search=1&start=0&re cords_display=10&search_word=all

(1) Falamma fasala talootu bialjunoodi qala inna Allaha mubtaleekum binaharin faman shariba minhu falaysa minnee waman lam yatAAamhu fainnahu minnee illa mani ightarafa ghurfatan biyadihi fashariboo minhu illa qaleelan minhum falamma jawazahu huwa waallatheena amanoo maAAahu qaloo la taqata lana alyawma bijaloota wajunoodihi qala allatheena yathunnoona annahum mulaqoo Allahi kam min fiatin qaleelatin ghalabat fiatan katheeratan biithni Allahi waAllahu maAAa alssabireena ( سورة البقرة , Al-Baqara, Chapter #2, Verse #249)

(2) LiyaqtaAAa tarafan mina allatheena kafaroo aw yakbitahum fayanqaliboo khaibeena ( سورة آل عمران , Aal-e-Imran, Chapter #3, Verse #127)

(3) Waaqimi alssalata tarafayi alnnahari wazulafan mina allayli inna alhasanati yuthhibna alssayyiati thalika thikra lilththakireena ( سورة هود , Hud, Chapter #11, Verse #114)  also  on a different note please examine these two verses  in relation to TRF.. 11:114 Khalifa You shall observe the Contact Prayers (Salat) at both ends of the day, and during the night. The righteous works wipe out the evil works. This is a reminder for those who would take heed. Waaqimi alssalata tarafayi alnnahari wazulafan mina allayli inna alhasanati yuthhibna  alssayyiati thalika thikra lilththakireena   20:130 Khalifa Therefore, be patient in the face of their utterances, and praise and glorify your Lord before sunrise and before sunset. And during the night glorify Him, as well as at both ends of the day, that you may be happy. Faisbir AAala ma yaqooloona wasabbih bihamdi rabbika qabla tulooAAi alshshamsi  waqabla ghuroobiha wamin anai allayli fasabbih waatrafa alnnahari laAAallaka tarda  the Arabic is not the same.. whilst the top one is tarafayii, the second is atrafa.. ????