1. 
[syn: jutting, projected, projecting, protruding, relieved, sticking(p), sticking out(p)]
The Collaborative International Dictionary of English v.0.48:
Protrude \Pro*trude"\, v. t. [imp. & p. p. Protruded; p. pr. &
   vb. n. Protruding.] [L. protrudere, protrusum; pro forward
   + trudere to thrust. See Threat.]
   [1913 Webster]
   1. To thrust forward; to drive or force along. --Locke.
      [1913 Webster]
   2. To thrust out, as through a narrow orifice or from
      confinement; to cause to come forth.
      [1913 Webster]
            When . . . Spring protrudes the bursting gems.
                                                  --Thomson.
      [1913 Webster]
WordNet (r) 3.0 (2006):
protruding
    adj 1: extending out above or beyond a surface or boundary; "the
           jutting limb of a tree"; "massive projected buttresses";
           "his protruding ribs"; "a pile of boards sticking over
           the end of his truck" [syn: jutting, projected,
           projecting, protruding, relieved, sticking(p),
           sticking out(p)]