.
c таджикского с английского

даҳа

(n.) 1 group, consisting of ten persons; 
2 hist. (administrative unit in Bukharian emirate); 
3 hist. (soldierly subdivision in Bukharian emirate); 
4 decade; 
~и адабиёт ва санъат decade of literature and art; 
5 spec.. ten-day period (last ten days before forming the cocoon silkworm); 
6 rel. (anamnesis deceased made for last ten days of urazi)