Negiah
Negiah (Hebrew: נגיעה), literally "touch", is the concept in Jewish law (Halakha) that forbids or restricts sensual physical contact with a member of the opposite sex except for one's spouse and certain close relatives to whom one is presumed not to have sexual attraction. A person who abides by this halakha is colloquially described as a shomer negiah ("one observant of negiah").