A black ink, made from lampblack, used for printing and artwork.

An extended session of lectures or discussions on controversial topics as a form of protest.

An act of betrayal or treachery

(idiomatic) To betray (somebody).

Something that is related or connected to another thing. / An authorized product based on a media property, such as a film or video game, by way of cross-promotion.

(anatomy) An organ, such as the heart or colon, that is entirely within the confines of the body.

(idiomatic, informal) To prove to be useful or helpful.

(modal) Actually.

(idiomatic) An event or achievement which is unpleasant for someone, especially for those who considered it impossible or unwelcome; an annoyance.

(Britain) monkey in the middle