Harm
Harm in the definition of take in the Act means an act which actually kills or injures wildlife. Such act may include significant habitat modification or degradation where it actually kills or injures wildlife by significantly impairing essential behavioral patterns, including breeding, feeding or sheltering.
Source
50 CFR § 17.3
Scoping language
In addition to the definitions contained in part 10 of this subchapter, and unless the context otherwise requires, in this part 17: