give praise, sing forth praises, psalms

Boyd’s Bible Dictionary:

(play a stringed instrument). In Hebrew, “Praises.” The collection of one hundred and fifty lyrics which compose the nineteenth O. T. book. The liturgical hymnbook of the Hebrews, and accepted by early Christians. Authorship of seventy of them ascribed to David. The most perfect specimens of Hebrew poetry extant.

“Praise” From Concise Bible Dictionary:

See SINGING.

“Psalms” From Concise Bible Dictionary:

This word occurs in the Old Testament only in connection with the Psalms of David and those in the Book of Psalms. David is called “the sweet psalmist of Israel” (2 Sam. 23:11Now these be the last words of David. David the son of Jesse said, and the man who was raised up on high, the anointed of the God of Jacob, and the sweet psalmist of Israel, said, (2 Samuel 23:1)). There can be no doubt that in connection with the “singers,” and the praising God with instruments, the Psalms were used. We read “sing psalms unto him,” “Make a joyful noise unto him with psalms,” &c. In New Testament days, for a time at least, the Psalms of David may have been sung by believers, but there were also hymns and spiritual songs, and it is to be remarked that in the singing at the institution of the Lord’s supper a hymn (ὑμνέω) is spoken of, not a psalm (φαλμός). See PASSOVER. The latter Greek word (besides the occurrences which refer to the Book of Psalms) is found in 1 Corinthians 14:2626How is it then, brethren? when ye come together, every one of you hath a psalm, hath a doctrine, hath a tongue, hath a revelation, hath an interpretation. Let all things be done unto edifying. (1 Corinthians 14:26); Ephesians 5:1919Speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord; (Ephesians 5:19) and Colossians 3:1616Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord. (Colossians 3:16).

“Singing” From Concise Bible Dictionary:

Such organized choirs have no place in the New Testament They that worship God “must worship Him in spirit and in truth.” This also applies to the singing: “I will sing with the spirit, and I will sing with the understanding also” (1 Cor. 14:1515What is it then? I will pray with the spirit, and I will pray with the understanding also: I will sing with the spirit, and I will sing with the understanding also. (1 Corinthians 14:15); compare 1 Cor. 14:2626How is it then, brethren? when ye come together, every one of you hath a psalm, hath a doctrine, hath a tongue, hath a revelation, hath an interpretation. Let all things be done unto edifying. (1 Corinthians 14:26)). “Be filled with the Spirit, speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody [or chanting] in your heart to the Lord” (Eph. 5:1919Speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord; (Ephesians 5:19)). “In psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord” (Col. 3:1616Let the word of Christ dwell in you richly in all wisdom; teaching and admonishing one another in psalms and hymns and spiritual songs, singing with grace in your hearts to the Lord. (Colossians 3:16)). There will be singing in heaven (Rev. 5:99And they sung a new song, saying, Thou art worthy to take the book, and to open the seals thereof: for thou wast slain, and hast redeemed us to God by thy blood out of every kindred, and tongue, and people, and nation; (Revelation 5:9)). Singing and PRAISE naturally go together. At the institution of the Lord’s supper they “sang a hymn,” margin “psalm,” ὐμνέω (Matt. 26:3030And when they had sung an hymn, they went out into the mount of Olives. (Matthew 26:30)). The same word is translated “sang praises” unto God, when Paul and Silas were in prison (Acts 16:2525And at midnight Paul and Silas prayed, and sang praises unto God: and the prisoners heard them. (Acts 16:25)); and the Lord sings praise in the midst of the assembly (Psa. 22:2222I will declare thy name unto my brethren: in the midst of the congregation will I praise thee. (Psalm 22:22); Heb. 2:1212Saying, I will declare thy name unto my brethren, in the midst of the church will I sing praise unto thee. (Hebrews 2:12)).

Strong’s Dictionary of Hebrew Words:

Transliteration:
zamar
Phonic:
zaw-mar’
Meaning:
a primitive root (perhaps ident. with 2168 through the idea of striking with the fingers); properly, to touch the strings or parts of a musical instrument, i.e. play upon it; to make music, accompanied by the voice; hence to celebrate in song and music
KJV Usage:
give praise, sing forth praises, psalms