Hessian \Hes"sian\, a. Of or relating to Hesse, in Germany, or to the Hessians. [1913 Webster]

Hessian boots, or Hessians, boot of a kind worn in England, in the early part of the nineteenth century, tasseled in front. --Thackeray.

Hessian cloth, or Hessians, a coarse hempen cloth for sacking.

Hessian crucible. See under Crucible.

Hessian fly (Zool.), a small dipterous fly or midge (Cecidomyia destructor). Its larv[ae] live between the base of the lower leaves and the stalk of wheat, and are very destructive to young wheat; -- so called from the erroneous idea that it was brought into America by the Hessian troops, during the Revolution. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Cecidomyia \Cec`i*do*my"i*a\ (s[e^]s`[i^]*d[-o]*m[imac]"[i^]*[.a]), prop. n. [Nl., fr. Gr. khki`s, khki^dos, a gall nut + myi^a a fly.]

(Zool.) A genus of small dipterous files, including several very injurious species, as the Hessian fly. See Hessian fly. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Hessian fly

Source: WordNet (r) 2.0
 

Hessian \Hes"sian\, a. Of or relating to Hesse, in Germany, or to the Hessians.

Hessian boots, or Hessians, boot of a kind worn in England, in the early part of the nineteenth century, tasseled in front. --Thackeray.

Hessian cloth, or Hessians, a coarse hempen cloth for sacking.

Hessian crucible. See under Crucible.

Hessian fly (Zo["o]l.), a small dipterous fly or midge (Cecidomyia destructor). Its larv[ae] live between the base of the lower leaves and the stalk of wheat, and are very destructive to young wheat; -- so called from the erroneous idea that it was brought into America by the Hessian troops, during the Revolution.

Source: Webster's Revised Unabridged Dictionary (1913)