n.1.(Bot.) A European composite herb (Centaurea nigra); - so called from the resemblance of its knobbed head to an iron ball fixed on a long handle.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Dyrk was shooting a PSE Scorpion drawing 75 pounds, 300 Radial X Weave arrows from Carbon Force, and 100-grain Rocky Mountain Ironheads. Mark used a 58-pound Mathews Conquest compound, Gold Tip 5575 arrows, and 125-grain Thunderheads.
"The cost of living is quite high in Norway so they have a lot of old bikes from the 60s and 70s, such as Ironheads and Shovelheads, so we have a driver following them down with two new bikes in case there are any breakdowns."
The equivalent of you or I donating a used bus ticket is hardly likely to win friends and influence anyone, let alone the squeaky clean ironheads in Tony's new model party.