The Collaborative International Dictionary of English v.0.48:

Beleaguer \Be*lea"guer\, v. t. [imp. & p. p. Beleaguered; p.
   pr. & vb. n. Beleaguering.] [D. belegeren (akin to G.
   belagern, Sw. bel[aum]gra, Dan. beleire); pref. be- = E. be-
   + leger bed, camp, army, akin to E. lair. See Lair.]
   To surround with an army so as to preclude escape; to
   besiege; to blockade.
   [1913 Webster]

         The wail of famine in beleaguered towns. --Longfellow.
   [1913 Webster]

   Syn: To block up; environ; invest; encompass.
        [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

35 Moby Thesaurus words for "beleaguered":
   barred, beset, besieged, blockaded, bound, cabined, caged,
   cloistered, closed-in, confined, cooped, cordoned, cordoned off,
   corralled, cramped, cribbed, enclosed, fenced, hedged, hemmed,
   immured, imprisoned, incarcerated, jailed, leaguered, mewed, paled,
   penned, pent-up, quarantined, railed, restrained, shut-in, walled,
   walled-in