Emily Dickinson Lexicon

LANK, a. [Sax. hlanca; Gr. λαγαρος, probably allied to flank, and W. llac, slack, lax; llaciaw, to slacken; G. schlank.]

1. Loose or lax and easily yielding to pressure; not distended; not stiff or firm by distension; not plump; as, a lank bladder or purse. The clergy's bags / Are lank and lean with thy extortions. – Shak.
2. Thin; slender; meager; not full and firm; as, a lank body.
3. Languid; drooping. [See Languish.] – Milton.