The Collaborative International Dictionary of English v.0.48:

Squash \Squash\, n. [Massachusetts Indian asq, pl. asquash, raw,
   green, immature, applied to fruit and vegetables which were
   used when green, or without cooking; askutasquash vine
   apple.] (Bot.)
   A plant and its fruit of the genus Cucurbita, or gourd
   kind.
   [1913 Webster]

   Note: The species are much confused. The long-neck squash is
         called Cucurbita verrucosa, the Barbary or China
         squash, Cucurbita moschata, and the great winter
         squash, Cucurbita maxima, but the distinctions are
         not clear.
         [1913 Webster]

   Squash beetle (Zool.), a small American beetle (Diabrotica
      vittata, syn. Galeruca vittata) which is often abundant
      and very injurious to the leaves of squash, cucumber, etc.
      It is striped with yellow and black. The name is applied
      also to other allied species.

   Squash bug (Zool.), a large black American hemipterous
      insect (Coreus tristis syn. Anasa tristis) injurious
      to squash vines.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

crookneck \crook"neck`\, n.
   Either of two varieties of squash, distinguished by their
   tapering, recurved necks. The summer crookneck is
   botanically a variety of the pumpkin (Cucurbita pepo) and
   matures early in the season. It is pale yellow in color, with
   warty excrescences. The winter crookneck belongs to a
   distinct species (Cucurbita moschata) and is smooth and
   often striped. [U. S.]

   Syn: crookneck squash.
        [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

Cucurbita moschata
    n 1: any of various plants bearing squash having hard rinds and
         elongated recurved necks [syn: winter crookneck, winter
         crookneck squash, Cucurbita moschata]