psalm: [OE] The Greek verb psállein originally meant ‘pluck’, but it was extended figuratively to ‘pluck harpstrings’, and hence ‘sing to the accompaniment of the harp’. From it was derived the noun psalmós ‘harp-song’, which was used in the Greek Septuagint to render Hebrew mizmōr ‘song (of the sort sung to the harp by David)’. It passed into Old English via late Latin psalmus. Another derivative of Greek psállein was psaltérion ‘stringed instrument played by plucking’, which has given English psalter [OE] and psaltery [13].
