ʾal tašḥēt אַל תַּשְׁחֵת ‘Al-taschith’ (Hebrew)

Etymology^?: from ʾal אַל ‘not’ and šāḥat שָׁחַת ‘to ruin’
Roots: אל שׁחת

ʾal tašḥēt n, m
Al-taschith = "do not destroy"
1) (Hiphil) a command to the chief musician, or perhaps the title of a melody used for several Psalms