Source : Webster's Revised Unabridged Dictionary (1913)

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 ({C. moschata}) and is smooth and often
   striped. [U. S.]

Source : WordNet®

summer crookneck
     n : yellow squash with a thin curved neck and somewhat warty
         skin [syn: {crookneck}, {crookneck squash}]