a. [ L. coarctatus, p. p. of coarctare to press together; co- + arctare to press together, from arctus, p. p. See Arctation. ] (Zool.) Pressed together; closely connected; -- applied to insects having the abdomen separated from the thorax only by a constriction. [ 1913 Webster ]

Coarctate pupa (Zool.), a pupa closely covered by the old larval skin, as in most Diptera. [ 1913 Webster ]

{ , v. t. [ See Coarctate, a. ] 1. To press together; to crowd; to straiten; to confine closely. [ Obs. ] Bacon. [ 1913 Webster ]

2. To restrain; to confine. [ Obs. ] Ayliffe. [ 1913 Webster ]

n. [ L. coarctatio. ] 1. Confinement to a narrow space. [ Obs. ] Bacon. [ 1913 Webster ]

2. Pressure; that which presses. [ Obs. ] Ray. [ 1913 Webster ]

3. (Med.) A stricture or narrowing, as of a canal, cavity, or orifice. [ 1913 Webster ]

a. [ Compar. Coarser superl. Coarsest. ] [ As this word was anciently written course, or cours, it may be an abbreviation of of course, in the common manner of proceeding, common, and hence, homely, made for common domestic use, plain, rude, rough, gross, e. g., “Though the threads be course.” Gascoigne. See Course. ] [ 1913 Webster ]

1. Large in bulk, or composed of large parts or particles; of inferior quality or appearance; not fine in material or close in texture; gross; thick; rough; -- opposed to fine; as, coarse sand; coarse thread; coarse cloth; coarse bread. [ 1913 Webster ]

2. Not refined; rough; rude; unpolished; gross; indelicate; as, coarse manners; coarse language. [ 1913 Webster ]

I feel
Of what coarse metal ye are molded. Shak. [ 1913 Webster ]

To copy, in my coarse English, his beautiful expressions. Dryden.

Syn. -- Large; thick; rough; gross; blunt; uncouth; unpolished; inelegant; indelicate; vulgar. [ 1913 Webster ]

a. Having a coarse grain or texture, as wood; hence, wanting in refinement. [ 1913 Webster ]

adv. In a coarse manner; roughly; rudely; inelegantly; uncivilly; meanly. [ 1913 Webster ]

v. t. To make coarse or vulgar; as, to coarsen one's character. [ R. ] Graham. [ 1913 Webster ]

adj. made coarse or crude by lack of skill; -- sometimes used to mean inferior. [ WordNet 1.5 ]

n. The quality or state of being coarse; roughness; inelegance; vulgarity; grossness; as, coarseness of food, texture, manners, or language. “The coarseness of the sackcloth.” Dr. H. More. [ 1913 Webster ]

Pardon the coarseness of the illustration. L'Estrange. [ 1913 Webster ]

A coarseness and vulgarity in all the proceedings. Burke. [ 1913 Webster ]

n. (Anat.) The union or articulation of bones to form a joint. [ 1913 Webster ]