Lewis Short
pycnŏcŏmon (noun N) = πυκνόκομον:
* A plant, devil's-bit: Scabiosa succisa, Linn.; or, acc. to Sprengel, small-flowered motherwort: Leonurus Marrubiastrum, Linn.; Plin. 26, 8, 36, § 57.
Charlton T. Lewis, Charles Short, A Latin Dictionary