club-shaped

from WordNet (r) 3.0 (2006)

club-shaped
    adj 1: shaped in the form of the black trefoil or clover leaf on
           some playing cards
    2: shaped in the form of a club that is larger at one end

from The Collaborative International Dictionary of English v.0.48

Club-shaped \Club"-shaped\, a.
   Enlarged gradually at the end, as the antenn[ae] of certain
   insects.
   [1913 Webster]

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