[1] : The Collaborative International Dictionary of English v.0.48

cliff \cliff\ kli^f, n. as. clif, cloef; akin to os. klif,
   d. klif, klip, icel. klif, dan.  g. klippe, sw. klippa;
   perh. orig. a climbing place. see climb.
   a high, steep rock; a precipice.
   1913 webster

   cliff swallow zool., a north american swallow
      petrochelidon lunifrons, which builds its nest against
      cliffs; the eaves swallow.
      1913 webster
see also:
climb cliff swallow petrochelidon lunifrons eaves swallow 

[2] : The Collaborative International Dictionary of English v.0.48

cliff \cliff\, n. mus.
   see clef. obs.
   1913 webster
see also:
clef 

[3] : WordNet (r) 2.0

cliff
     n : a steep high face of rock; "he stood on a high cliff
         overlooking the town"; "a steep drop" syn: drop, drop-off
see also:
drop drop-off 

Cliff >> C Words
Cliff, definition of term: Cliff
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