circular vs. straight lines

is it just me, or is it incredibly fucking ridiculous that there's a definition for definition?

def·i·ni·tion ( P ) Pronunciation Key (df-nshn)n.

A statement conveying fundamental character.
A statement of the meaning of a word, phrase, or term, as in a dictionary entry.
The act or process of stating a precise meaning or significance; formulation of a meaning.
The act of making clear and distinct: a definition of one's intentions.
The state of being closely outlined or determined: “With the drizzle, the trees in the little clearing had lost definition” (Anthony Hyde).
A determination of outline, extent, or limits: the definition of a President's authority.
The clarity of detail in an optically produced image, such as a photograph, effected by a combination of resolution and contrast.
The degree of clarity with which a televised image or broadcast signal is received.