abrepuños

Any of many flowering plants of the genus Centaurea, especially of the species Centaurea melitensis, Centaurea ornata and Centaurea solstitialis; Any of many flowering plants of the genus Ranunculus, especially of the species Ranunculus muricatus and Ranunculus arvensis

Verb-object compound, composed of abre (“to open”) + puños (“fist”). Literally, “fist-opener”.