lah
/lɑː/(亦作la)
noun
1- Music【乐】(in tonic sol-fa) the sixth note of a major scale（首调唱名法）大音阶第六音。
1.1
- the note A in the fixed-doh system固定唱名法A音。
词源
Middle English: representing (as an arbitrary name for the note) the first syllable of Latin labii, taken from a Latin hymn （see SOLMIZATION）.