acuminate

Từ điển WordNet v3.1 - WordNet Dictionary

I - verb

make sharp or acute;
taper;
make (something) come to a point
• Derivationally related forms:
acumen
• Hypernyms:
sharpen, taper, point
• Verb Frames:
- Somebody ----s something
- Something ----s something

II - adjective

(of a leaf shape) narrowing to a slender point
• Similar to:
simple, unsubdivided
• Derivationally related forms:
acumen