groundsel

n [U] weed with yellow flowers, sometimes used as food for certain cage-birds 千里光（开黄花的草, 有时用作某些笼养鸟的食物）.

grotty, grouch, grouchy, ground, ground control, ground crew, ground floor, ground rule, ground speed, ground staff, ground swell, ground-bait, ground-nut, ground-plan, ground-rent, grounded, grounding, groundless, groundlessly, grounds, groundsheet, groundsman, groundwork, group, group captain, group practice, group therapy, groupie, grouping, grouse, grove, grovel, groveler, grovelling, grow, grow on, grow out of, grow up, grower, growing,