Dictionary.com
definitions

gapeseed

[geyp-seed, gap-]
noun British Dialect.
  1. a daydream or reverie.
  2. an idealistic, impossible, or unreal plan or goal.
  3. a person who gapes or stares in wonder, especially a rustic or unworldly person who is easily awed.
  4. something that is gaped at; anything unusual or remarkable.
Idioms
  1. seek/plant/sow gapeseed,
    1. to daydream; woolgather.
    2. to plan, strive, or wish for impossible or unreal goals.

Origin of gapeseed

First recorded in 1590–1600; gape + seed
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018