م ک وm-k-w
(ن) مَكَا يَمْكُوْ مَكْوًا وَمُكَاءًmakā yamkū makwan wa-mukāʾan (original form: مَكَوَ يَمْكُوُmakawa yamkuwu): to whistle with the mouth. (This verb is not used in the Quran.)
مُكَاءٌmukāʾ (verbal noun, maṣdar; also a noun, ism dhāt): whistling. Only once in the Quran, in the account of the worship of the polytheists: ﴿وَمَا كَانَ صَلَاتُهُمْ عِنْدَ الْبَيْتِ اِلَّا مُكَآءً وَّتَصْدِيَةً﴾ (Al-Anfāl 8:35)