pyriform

A special oblong or pyriform cell, with slender branches, which bears the spores in that division of fungi called Basidiomycetes, of which the common mushroom is an example.

From Webster's Unabridged Dictionary (2nd 100 Pages) by Noah Webster

Involucral leaves 2 or 4, like the cauline; perianth pyriform, becoming cylindric, incurved, abruptly rounded at the summit, the minute orifice prominently ciliolate.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Core pyriform, indistinct, closed, clasping; Seeds pointed, imperfect; Flesh yellow, tender, fine grained; Flavor sub-acid, aromatic; Quality good; Use, market; Season, September.

From American Pomology Apples by J. A. Warder

The stomach is always simple and pyriform; the caecum is either absent or short and simple; and the colon is not sacculated or much wider than the small intestine.

From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 4 "Carnegie Andrew" to "Casus Belli" by Various

Core small, pyriform, regular, closed, clasping; Seeds plump, pointed; Flesh yellow, tender, fine-grained, juicy; Flavor acid, rich; Quality very good; Use, table; Season, mid-winter.

From American Pomology Apples by J. A. Warder