Pŏl'len, n.

n. [Lat. pollen and pollis, fine flour, fine dust, allied to Gr. πάλη, id.]

1. Fine bran or flour. [Obs.] Bailey.
2. (Bot.) The fecundating dust or powder of the anthers of flowers. Martyn.

Pollen-mass (Bot.), the pollen of a plant, when its grains unite into a mass, as in milk-weed. Gray.—Pollen-tube (Bot.), a thin, slender tube of great tenuity, which issues from the pollen grain on its contact with the stigma, which it penetrates, thus conveying, as is supposed, the fecundating matter of the grain to the ovule. Gray.