28 C.F.R. § 115.6

For purposes of this part, the term—

Sexual abuse includes—

(1) Sexual abuse of an inmate, detainee, or resident by another inmate, detainee, or resident; and

(2) Sexual abuse of an inmate, detainee, or resident by a staff member, contractor, or volunteer.

Sexual abuse of an inmate, detainee, or resident by another inmate, detainee, or resident includes any of the following acts, if the victim does not consent, is coerced into such act by overt or implied threats of violence, or is unable to consent or refuse:

(1) Contact between the penis and the vulva or the penis and the anus, including penetration, however slight;

(2) Contact between the mouth and the penis, vulva, or anus;

(3) Penetration of the anal or genital opening of another person, however slight, by a hand, finger, object, or other instrument; and

(4) Any other intentional touching, either directly or through the clothing, of the genitalia, anus, groin, breast, inner thigh, or the buttocks of another person, excluding contact incidental to a physical altercation.

Sexual abuse of an inmate, detainee, or resident by a staff member, contractor, or volunteer includes any of the following acts, with or without consent of the inmate, detainee, or resident:

(1) Contact between the penis and the vulva or the penis and the anus, including penetration, however slight;

(2) Contact between the mouth and the penis, vulva, or anus;

(3) Contact between the mouth and any body part where the staff member, contractor, or volunteer has the intent to abuse, arouse, or gratify sexual desire;

(4) Penetration of the anal or genital opening, however slight, by a hand, finger, object, or other instrument, that is unrelated to official duties or where the staff member, contractor, or volunteer has the intent to abuse, arouse, or gratify sexual desire;

(5) Any other intentional contact, either directly or through the clothing, of or with the genitalia, anus, groin, breast, inner thigh, or the buttocks, that is unrelated to official duties or where the staff member, contractor, or volunteer has the intent to abuse, arouse, or gratify sexual desire;

(6) Any attempt, threat, or request by a staff member, contractor, or volunteer to engage in the activities described in paragraphs (1) through (5) of this definition;

(7) Any display by a staff member, contractor, or volunteer of his or her uncovered genitalia, buttocks, or breast in the presence of an inmate, detainee, or resident, and

(8) Voyeurism by a staff member, contractor, or volunteer.

Sexual harassment includes—

(1) Repeated and unwelcome sexual advances, requests for sexual favors, or verbal comments, gestures, or actions of a derogatory or offensive sexual nature by one inmate, detainee, or resident directed toward another; and

(2) Repeated verbal comments or gestures of a sexual nature to an inmate, detainee, or resident by a staff member, contractor, or volunteer, including demeaning references to gender, sexually suggestive or derogatory comments about body or clothing, or obscene language or gestures.

Voyeurism by a staff member, contractor, or volunteer means an invasion of privacy of an inmate, detainee, or resident by staff for reasons unrelated to official duties, such as peering at an inmate who is using a toilet in his or her cell to perform bodily functions; requiring an inmate to expose his or her buttocks, genitals, or breasts; or taking images of all or part of an inmate's naked body or of an inmate performing bodily functions.