In plain terms
Ruku
Checking for an Arabic voice…
The first u is short. The long second vowel is followed by Arabic ayn.

Source entry · Editorial review pending ↗
Ruku is the bowing position in prayer, performed after the standing recitation in each rakah, back level and hands on the knees. It comes before that rakah's two prostrations. A specific phrase of remembrance is said while in it.
Learn this word in context.
Related terms
Salah
Salah is the ritual prayer performed by Muslims: a fixed sequence of standing, bowing, and prostration, with set recitation at each stage. Five are obligatory each day, at set…
Rakah
A rakah is one complete unit of salah, the ritual prayer — a cycle of standing, bowing, and two prostrations, with set recitation. Each of the five daily prayers has a fixed…
Sujud
Sujud is prostration in prayer: placing the forehead, nose, palms, knees, and toes on the ground. Each rakah includes two. Hadith describe it as a position of particular…
Qiyam
Qiyam is the standing position in prayer, when the opening chapter of the Qur'an and further recitation are read. It is the first posture of each rakah. The word is also used…