overcast
 (a.)陰天的,陰暗的,愁悶的


 O·ver·cast v. t.
 1. To cast or cover over; hence, to cloud; to darken.
    Those clouds that overcast your morn shall fly.   --Dryden.
 2. To compute or rate too high.
 3. Sewing To take long, loose stitches over (the raw edges of a seam) to prevent raveling.
 4. Bookbinding To fasten, as single sheets, by overcast stitching or by folding one edge over another.

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 overcast
      adj : filled or abounding with clouds [syn: cloud-covered, clouded,
             sunless]
      n 1: the state of the sky when it is covered by clouds [syn: cloudiness,
            cloud cover]
      2: gloomy semidarkness caused by cloud cover [syn: cloudiness]
      3: a long whip stitch or overhand stitch overlying an edge to
         prevent raveling [syn: overcasting]
      4: a cast that falls beyond the intended spot
      v 1: make overcast or cloudy; "Fall weather often overcasts our
           beaches" [syn: cloud] [ant: clear up]
      2: sew over the edge of with long slanting wide stitches
      3: sew with an overcast stitch from one section to the next;
         "overcast books"