val·ley /ˈvæli/
 山谷,谿谷,流域,凹地
 Val·ley n.; pl. Valleys
 1. The space inclosed between ranges of hills or mountains; the strip of land at the bottom of the depressions intersecting a country, including usually the bed of a stream, with frequently broad alluvial plains on one or both sides of the stream. Also used figuratively.
    The valley of the shadow of death.   --Ps. xxiii. 4.
 Sweet interchange
 Of hill and valley, rivers, woods, and plains.   --Milton.
 Note: ☞ Deep and narrow valleys with abrupt sides are usually the results of erosion by water, and are called gorges, ravines, canyons, gulches, etc.
 2. Arch. (a) The place of meeting of two slopes of a roof, which have their plates running in different directions, and form on the plan a reentrant angle. (b) The depression formed by the meeting of two slopes on a flat roof.
 Valley board Arch., a board for the reception of the lead gutter in the valley of a roof. The valley board and lead gutter are not usual in the United States.
 Valley rafter, or Valley piece Arch., the rafter which supports the valley.
 Valley roof Arch., a roof having one or more valleys. See Valley, 2, above.
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 valley
      n : a long depression in the surface of the land that usually
          contains a river [syn: vale]
 Valley
    (1.) Heb. bik'ah, a "cleft" of the mountains (Deut. 8:7; 11:11;
    Ps. 104:8; Isa. 41:18); also a low plain bounded by mountains,
    as the plain of Lebanon at the foot of Hermon around the sources
    of the Jordan (Josh. 11:17; 12:7), and the valley of Megiddo (2
    Chr. 35:22).
      (2.) 'Emek, "deep;" "a long, low plain" (Job 39:10, 21; Ps.
    65:13; Cant. 2:1), such as the plain of Esdraelon; the "valley
    of giants" (Josh. 15:8), usually translated "valley of Rephaim"
    (2 Sam. 5:18); of Elah (1 Sam. 17:2), of Berachah (2 Chr.
    20:26); the king's "dale" (Gen. 14:17); of Jehoshaphat (Joel
    3:2, 12), of Achor (Josh. 7:24; Isa. 65:10), Succoth (Ps. 60:6),
    Ajalon (Josh. 10:12), Jezreel (Hos. 1:5).
      (3.) Ge, "a bursting," a "flowing together," a narrow glen or
    ravine, such as the valley of the children of Hinnom (2 Kings
    23:10); of Eshcol (Deut. 1:24); of Sorek (Judg. 16:4), etc.
      The "valley of vision" (Isa. 22:1) is usually regarded as
    denoting Jerusalem, which "may be so called," says Barnes (Com.
    on Isa.), "either (1) because there were several valleys within
    the city and adjacent to it, as the vale between Mount Zion and
    Moriah, the vale between Mount Moriah and Mount Ophel, between
    these and Mount Bezetha, and the valley of Jehoshaphat, the
    valley of the brook Kidron, etc., without the walls of the city;
    or (2) more probably it was called the valley in reference to
    its being compassed with hills rising to a considerable
    elevation above the city" (Ps. 125:2; comp. also Jer. 21:13,
    where Jerusalem is called a "valley").
      (4.) Heb. nahal, a wady or water-course (Gen. 26:19; Cant.
    6:11).