spec. The small hard seed or fruit of a plant; now only with contextual specification or defining… The seed or fruit of various other plants, as of…

The softer (usually edible) part contained within the hard shell of a nut or stone-fruit.

As a mass noun: plant seeds (see sense 1b), esp. when used for sowing to produce a new crop. Also: various other parts of plants (esp. tubers and…

A single seed of a plant, esp. one which is small, hard, and roundish in form. (After 15th cent. almost exclusively: the stone or pip of a fruit.)

A seed or pip of any of various fleshy fruits. Now English regional (chiefly northern).

Botany. The stone or seed of certain berries, esp. grapes. Cf. acine, n. 1. Obsolete.

= acinus, n. 1a. rare.

A small seed; a seedlet. Chiefly figurative.

The seed of a plant. Obsolete.

A small seed (also figurative).

Any of the (esp. small and hard) seeds of various fleshy fruits, as the apple, orange, grape, etc. Cf. pippin, n. 1a. Frequently with modifying…

Any of various kinds of seed that yield oil, e.g. sesame, linseed, flax seed, cotton-seed, niger seed, sunflower seed, etc.; (also) a plant or crop…