a·cu·mi·nate 
(ə-kymə-nĭt, -nāt′)
(ə-kymə-nĭt, -nāt′)adj.
Tapering gradually to a sharp point, as the tips of certain leaves.
tr.v. (-nāt′) a·cu·mi·nat·ed, a·cu·mi·nat·ing, a·cu·mi·nates
Archaic
Archaic
To sharpen or taper.
[Latin acūminātus, past participle of acūmināre, to sharpen, from acūmen, acuteness; see ACUMEN.]
a·cu′mi·nation n.