bitter

(usually in the plural bitters) A liquid or powder, made from bitter herbs, used in mixed drinks or as a tonic.

A type of beer heavily flavored with hops.

A turn of a cable about the bitts.

To make bitter.

Having an acrid taste (usually from a basic substance).

"The coffee tasted bitter."

Harsh, piercing or stinging.

Hateful or hostile.

"They're bitter enemies."

Cynical and resentful.

"I've been bitter ever since that defeat."

(in combination) A hardware system whose architecture is based around units of the specified number of bits (binary digits).