The word "προσκυνέω" (proskyneō) primarily means to show deep respect, reverence, or worship, often through physical gestures like bowing or kneeling. It is used in reference to worshiping God, Christ, or other heavenly beings, as well as showing homage to human superiors in certain contexts. The term can appear with different grammatical constructions, indicating either the object of worship or the act of falling down in reverence.