1) Doubly serrate 2) Rough 
doubly serrate; with smaller regular, asymmetric teeth on the margins of larger teeth
• (a.) Serrate on both sides, as some antennae. • (a.) Doubly serrate, or having the serratures serrate, as in some leaves.
Bi·ser'rate adjective [ Prefix bi- + serrate .] 1. (Botany) Doubly serrate, or having the serratures serrate, as in some leaves. 2. (Zoology) Serrate on both sides, as some antennæ. 
Doubly serrate; the serratures themselves serrate.
[adj] - having serrated serrations 2. [adj] - having double saw-teeth
adjective having saw-like notches with the notches themselves similarly notched
notched like a saw, with the teeth also notched; doubly serrate.