Luke 20:42ψαλμῶν
For David himself says in the book of Psalms: ‘The Lord said to my Lord, “Sit at My right hand
Acts 1:20ψαλμῶν
“For it is written in the book of Psalms: ‘May his place be deserted; let there be no one to dwell in it,’ and, ‘May another take his position.’
1 Corinthians 14:26ψαλμὸν
What then shall we say, brothers? When you come together, everyone has a psalm or a teaching, a revelation, a tongue, or an interpretation. All of these must be done to build up the church.
Ephesians 5:19ψαλμοῖς
Speak to one another with psalms, hymns, and spiritual songs. Sing and make music in your hearts to the Lord,
Colossians 3:16ψαλμοῖς
Let the word of Christ richly dwell within you as you teach and admonish one another with all wisdom, and as you sing psalms, hymns, and spiritual songs with gratitude in your hearts to God.

Abbott-Smith

ψαλμός, -οῦ, ὁ
(ψάλλω), [in LXX chiefly for מִזְמוֹר ;]

1. a striking, twitching with the fingers (Eur., al.), hence, a striking of musical strings (Æsch., a1.), and hence in later writers,

2. a sacred song sung to musical accompaniment, a psalm (LXX): 1Co.14:26, Eph.5:19, Col.3:16; of OT psalms, Luk.24:44, Act.13:33; βίβλος ψαλμῶν, Luk.20:42, Act.1:20.†
SYN.: see: ὕμνος
(AS)

Sources: Abbott-Smith’s Manual Greek Lexicon of the New Testament (1922, public domain) and glosses from STEPBible TBESG (CC BY 4.0); STEPBible TAGNT (Greek New Testament, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.