rotundate

from The Century Dictionary.

• Rounded off; specifically, in botany and zoology, noting bodies which are rounded off at their ends; also, in botany, same as rotund.

from the GNU version of the Collaborative International Dictionary of English.

• adjective Rounded; especially, rounded at the end or ends, or at the corners.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Rounded, especially at the end or corners.