Is it ensure, insure, or assure?
amine a·mine (ə-mēn', ām'ēn)
Any of a group of organic compounds of nitrogen that may be considered ammonia derivatives in which one or more hydrogen atoms have been replaced by one or more hydrocarbon radicals.
Any of a group of organic compounds that may be considered derivatives of ammonia (NH3) in which one or more hydrogen atoms have been replaced by a hydrocarbon radical. In aniline (C6H5NH2), for example, one hydrogen atom has been replaced by a phenyl group (C6H5). Amines are produced by the decay of organic matter.