starch

Short definition from Wiktionary

Noun

1. 1
   A widely diffused vegetable substance, found especially in seeds, bulbs and tubers, as extracted (e.g. from potatoes, corn, rice, etc.) in the form of a white, glistening, granular or powdery substance, without taste or smell, and giving a very peculiar creaking sound when rubbed between the fingers. It is used as a food, in the production of commercial grape sugar, for stiffening linen in laundri
2. 2
   Carbohydrates, as with grain and potato based foods.
3. 3
   A stiff, formal manner; formality.
4. 4
   Fortitude.
5. 5
   Any of various starch-like substances used as a laundry stiffener.

Verb

1. 1
   To apply or treat with laundry starch, to create a hard, smooth surface.

Adjective

1. 1
   Stiff; precise; rigid.