The step, or socket, in which the lower end of a millstone spindle runs.
- A pigmented liquid or paste used especially for writing or printing.
- A dark liquid ejected for protection by most cephalopods, including the octopus and squid.
- Informal Coverage in the print media; publicity: Her campaign rallies generated a lot of ink.
- To mark, coat, or stain with ink.
- Informal To append one's signature to (a contract, for example).