单词 rictus 释义 ‖ rictus|rkts|[L. rictus open mouth or jaws, f. ppl. stem of ring to open the mouth wide.]1. Bot. The orifice or throat of a bilabiate corolla.1760J. Lee Introd. Bot. iii. xxii. (1765) 228 Rictus..is the Gap or Opening between the two L...