in the (first) flush of

: preceding all others in time, order, or importance: such as

: earliest

: being the lowest forward gear or speed of a motor vehicle

: before another in time, space, or importance

: in the first place

: for the first time

: one that is number one in a series — see Table of Numbers

: something that is first: such as

: the first occurrence or item of a kind

: to fly away suddenly

: to cause (a bird) to flush

: to expose or chase from a place of concealment

: a hand of playing cards all of the same suit

: a series of three or more slalom gates set vertically on a slope

: a sudden flow (as of water)

: a sudden increase or expansion

: a surge of emotion

: to flow and spread suddenly and freely

: to glow brightly

: blush

: of a ruddy healthy color

: full of life and vigor : lusty

: filled to overflowing

: in a flush manner

: squarely

: to make flush