plant species, late 14c., from Old French espurge, from espurgier "to purge" (transitive and intransitive), from Latin expurgare, from ex- "out" (see ex-) + purgare "to purge" (see purge (v.)). So called from the purgative and emetic properties of the plant's root.
雙語例句
1. The morphological characteristics, biological characteristics and adaptability of caper spurge are reported.