# What is the correct word to describe a turn or a bend — “hard”, “sharp”, “heavy”…?

If there is a very sharp turn or detour or bend — in a piece of plastic, for example, — what is the correct word to describe it (hard, sharp, heavy...)?

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Alyazan, you need to explain a bit more. A piece of plastic cannot have a detour ("a roundabout road, especially one that is used temporarily while a main route is blocked"), so it sounds like you used that as just a random example. What is your actual context? Have you looked up the various words you list in the dictionary and thesaurus? What did you find there? – Marthaª Oct 26 '12 at 14:00
A very sharp bend in the road is described by a single word in the novel Perfume by Patrick Süskind, but unfortunately it escapes my memory. – user30616 Nov 8 '12 at 23:48

First off, I would call this a "tight bend" in a piece of plastic. Possibly a "sharp bend", but "tight" would be more commonly used.

Secondly, you wouldn't call it a detour or a turn in a piece of plastic. These words refer to a road or path etc.

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What if I am describing the geometry of this tight bending ?? – ABC-biophi Oct 25 '12 at 23:01
You would describe it as a tight bend. The bend is tight. The corner can be sharp if it is very tight. What do you mean? – Rory Alsop Oct 25 '12 at 23:02
I say : tight bending with angles between 90 and 180 are usually observed – ABC-biophi Oct 25 '12 at 23:07
"Sharp" could work in context here as well as "tight" – Rory Alsop Oct 25 '12 at 23:11
Yes, but while an angle of 90 degrees might be considered a tight bend, an angle near 180 degrees is nearly straight and therefore not a very tight bend. I think if you are going to use the term "tight bending" you need to refine your quoted angular limits. – Jim Oct 25 '12 at 23:55

If the bend is near an edge and folds part of the plastic like a hem, then it is a folded edge. Fold (“A bend or crease”) may also refer to an angled bend elsewhere in a sheet or piece of plastic, whether sharply-bent or not. If the plastic is thin sheet, crease (“A line or mark made by folding or doubling any pliable substance...”) is appropriate.

A tight turn in a road or path may be called a U or might be a switchback (“A hairpin bend” or “A zigzag path, road or railway track; especially a railway track in which the train travels in a reverse direction at each switch”).

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When talking about the geometry of a bend in materials, such as plastic, geometric terms are often used. In carpentry or manufacturing. For example, you could say