D defs.my
Entry 5 senses Webster, 1913

Fulcrum

/fo͝ol'-krəm/ · Ful·crum · IPA /ˈfʊlk.ɹəm/
01 n. A prop or support.
pl. Fulcra, Fulcrums ((#))
  1. 1.
    A prop or support.
  2. 2.
    That by which a lever is sustained, or about which it turns in lifting or moving a body.(Mech.)
  3. 3.
    An accessory organ such as a tendril, stipule, spine, and the like.(Bot.) [R.]
  4. 4.
    The horny inferior surface of the lingua of certain insects.(Zool.)
  5. 5.
    The connective tissue supporting the framework of the retina of the eye.(Anat.)