(a) The 'art' or 'science' of measuring and calculating, being one of the four disciplines comprised in the quadrivium (along with geometry, astronomy, and music); (b) a treatise on this 'science'. …

Fire-breathing monsters. …

One who participates in an ecclesiastical schism, a schismatic; heretike and (or) scismatik. …

Gram. The joining of elements of a sentence or phrase by partial concord, syllepsis [see concepcioun n.4. for examples]. …

The rhetorical figure synecdoche. …

Stavesacre, licebane (Delphinium staphisagria); also, the seeds of this plant, used medicinally. …

(a) The digraph th; the letter þ or ð of the alphabet, thorn; (b) an abbrev. for that pron., rel. pron., conj., etc. …

(a) Shelled or cooked barley; (b) a medicinal drink made from shelled barley and water; tisane water; gruel tisane. …