Pollen is a powdery substance produced by plants, which is necessary for the fertilization of other plants. The crossword solutions for the term 'pollen' are SAC (3 letters) and ISGONEWITHTHEWIND (17 letters). SAC stands for 'staminate asexual carpel, ' which is a type of flower that produces pollen. ISGONEWITHTHEWIND is a reference to the 1939 movie of the same name, which features a scene in which Scarlett O'Hara is seen sneezing due to an allergy to pollen.