Merriam-Webster's Collegiate® Dictionary, 11th Edition
SIN
I. noun see: is Date: before 12th century
1. an offense against religious or moral law, an action that is or is felt to be highly reprehensible , an often serious shortcoming ; fault ,
2. transgression of the law of God, a vitiated state of human nature in which the self is estranged from God, see: offense
II. intransitive verb (sinned; sinning) Date: before 12th century to commit a sin, to commit an offense or fault,
III. noun
Etymology: Hebrew śin
Date: circa 1823
the 21st letter of the Hebrew alphabet,
IV. abbreviation sine