【医】 diastem; diastema
clump; cluster; crowd together; grove; thicket
【计】 clump; plex
【医】 bouquet; tuft
crack; rend; split
【医】 cleavage; cleft; crena; crenae; diastem; diastema; fissura; fissure
gap; rictus; rima; rimae; schistasis; schisto-; schizo-