Emily Dickinson Lexicon

LAM'IN, or LAM'IN-A, n. [L. lamina; W. llavyn, from extending, W. llav.]

1. A thin plate or scale; a layer or coat lying over another; applied to the plates of minerals, bones, &c. – Encyc.
2. A bone, or part of a bone, resembling a thin plate, such as the cribriform plate of the ethmoid bone. – Parr.
3. The lap of the ear. – Parr.
4. The border, or the upper, broad or spreading part of the petal, in a polypetalous corol. – Martyn.
5. The part of a leaf which is an expansion of the parenchyma or pith of the petiole. It is traversed by veins. – Lindley.