Strong's #1902: higgayown (pronounced hig-gaw-yone')

intensive from 1897; a murmuring sound, i.e. a musical notation (probably similar to the modern affettuoso to indicate solemnity of movement); by implication, a machination:--device, Higgaion, meditation, solemn sound.

Brown-Driver-Briggs Hebrew Lexicon:

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higgâyôn

1) meditation, resounding music, musing

1a) resounding music

1b) meditation, plotting

Part of Speech: noun masculine

Relation: intensive from H1897

Usage:

This word is used 4 times:

 

Psalms 9:16: "is snared in the work of his own hands. Higgaion. Selah."
Psalms 19:14: "Let the words of my mouth, and the meditation of my heart, be acceptable in thy sight, O LORD,"
Psalms 92:3: "the psaltery; upon the harp with a solemn sound."
Lamentations 3:62: "The lips of those that rose up against me, and their device against me all the day."