From Proto-Vietic *p-loh (“to blossom”), a prefixed form of *ʔa-loh (“to go out”) (whence Chut [Rục] loh¹ ("to go out")). Cognate with Chut [Rục] bloh¹.
The Northern form giỗ (now obsolete?) appeared in the Cách trí giáo khoa thư (革智教科書), composed in the 1920s. See also the triplet giồng (Northern), lôông ((North) Central), trồng (Southern).
- (Northern Vietnam) giỗ
- (North Central Vietnam) lỗ, lổ
- (Southern Vietnam, obsolete) trỗ
trổ • (魯, 擼, , 𦭦)
- to flower; to bloom
From Middle Vietnamese blổ.
trổ • (鑥, 𢭰)
- to chisel