Hair brush:

A simple hair brush is used in S&M, the hard side to hide the bum (ass) of the submissive and the brush side to create other sensation on the submissive (hitting, rubbing).

Hair pulling:

Action of pulling hair in a scene or as a DS action.

Hancuff:

Harness (wearing):

There are two kind of harness; one is a clothing which can have accessories like a cock ring and the other is for bondage use.

Hood:

Could be made from latex, cotton, PVC or leather. Hoods in BDSM seems to have a special place; for some, the hood on a submissive remove completely any identity, making the submissive more "a thing", for others; the hood become another bondage element even being for some a fetish.

Homosexuality:

Relationship where a person need to have a relationship with another person of the same sex. This relationship could be short or long term and could include sexual activities or not.

Force homosexuality:

To force a submissive to have sex with another one of the same sex.

Hot Waxing (Hair Removal):

Removal of hair on the body, using wax.

Human Puppy:

A domestic pet, like a dog, is often considered a thing. A submissive treated this way, lose his (her) identity, which could be very exciting for some Dominant or submissive (DS action). Of course, like anything, it could be a fetish for some.

Humiliation:

In a BDSM context; we can compare humiliation like a morale pain. It is used like physical pain except that instead of creating endorphins in the submissive' body, it create some kind of reaction in the mind of the submissive which could be pleasant or not. Humiliation could be created from something said, or physical.

In private:

Humiliation with no witness.

In public:

Using witness to humiliate the submissive

Hypoxyphilia: