I don't need anything to sharpen my appetite, which is always good on sea or land.
"The Hilltop Boys on Lost Island"
Cyril Burleigh
The reef is small; there is not much that is grand about it; but if one sits there while the sun sinks, a glowing ball, into the sea exactly opposite, and the ruby and diamond points of the lighthouses flash out far and wide, and perhaps a clear pale sickle moon begins to sharpen in outline in the fading sky, there is plenty on which to exercise the imagination.
"Cornwall"
G. E. Mitton
When did a gig ever sharpen anybody's wits and energies, unless it was when the horse bolted, and, crashing madly down a steep hill with a stone wall at the bottom, his desperate circumstances suggested to the only gentleman left inside some novel and unheard-of mode of dropping out behind?
"Dickens As an Educator"
James L. (James Laughlin) Hughes