The American Heritage® Dictionary of the English Language, 4th Edition
v. To make shallow cuts in (the skin), as when vaccinating.
v. To create a design on (the skin) by means of shallow cuts that are sometimes rubbed with a colorant or irritant to enhance the resulting scar tissue.
v. To break up the surface of (topsoil or pavement).
v. To distress deeply, as with severe criticism; lacerate.
v. Botany To slit or soften the outer coat of (seeds) in order to speed germination.
v. To remove thatch (build-up of organic matter on the soil) from a lawn, to de-thatch.
the GNU version of the Collaborative International Dictionary of English
v. To scratch or cut the skin of; esp. (Med.), to make small incisions in, by means of a lancet or scarificator, so as to draw blood from the smaller vessels without opening a large vein.
v. To stir the surface soil of, as a field.
The Century Dictionary and Cyclopedia
In surgery, to scratch or make superficial incisions in: as, to scarify the gums.
To stir up and prepare for sowing or planting by means of a scarifier: as, to scarify the soil.
Figuratively, to harrow or rasp, as the feelings.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. break up
v. scratch the surface of
v. puncture and scar (the skin), as for purposes or tribal identification or rituals
Word Usage
"I first learned about cassowaries when I was at the School for Field Studies SFS Center for Rainforest Studies in Fall of 1990 as a college student, and was fascinated that they're the only bird that can "scarify" certain rainforest seeds."