- the six-legged nymphal form of a tick, somewhat resembling a seed.
Origin of seed tick
An Americanism dating back to 1695–1705
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for seed tick
What was most aggravating were two pests of that region, the seed-tick and the chigger.Tenting on the Plains
Elizabeth B. Custer