Abraham Lincoln had little formal education as a child, receiving only a few years of schooling. However, he significantly sharpened his intellect through self-education, participating in debating societies and lyceums. His passion for reading and engaging in debate helped him develop the skills that would later contribute to his effective leadership and eloquent speeches as president.
I suppose it means trained or educated in how to represent the President. I have never seen the expression used. Its meaning might be more apparent from its context.
sharpened
Your canine teeth can be sharpened by going to your dentist, where he/she will probably add a contour in place, but if you mean 'sharpened' like a pencil sharpened, then talk to your dentist about that.
to sharpen, sharpened, sharpened. sharp = an adjective.
No, not every note is sharpened, or raised a half step. It's just that note. For example, in a measure, if the note A is sharpened, every A in that measure will be sharpened unless naturalized.
A shovel can be sharpened with the right tool in place.
A sharpened post if frequently referred to as a stake.
Sharpened is a verb not a noun
The blades can be sharpened, almost anything metal can be.
Sharpened is a verb. It describes the action of making something sharp.
pencils were sharpened using a knife or any sharp blade.
yes unless you got them sharpened a specific way