A rose eats colour, a bee eats the rose, and somewhere between those two meals Dickinson slips in an argument about why beautiful things have to end. The scene is tiny, one flower over one morning, but the claim is large: every "bright Mortality" is a payment made by something lovely.
The grammar is knotted, so it helps to untangle it. Roughly: a rose, well fed on "meals of Tint" and serving as a bee's dinner, became something in the course of noon. At "became" the sentence swerves from the particular to the general, and we get a rule: each bright mortality is the forfeit of a "Creature fair," once adored, which submits "for our unknown sake / To be esteemed no more." The rose is the example, and the "Creature fair" is every lovely, perishable thing. The poem works like a short proof, one instance followed by a law.
The imagery starts with appetite. "Full fed" suggests a bloom at its plumpest, ripe to the point of bursting, and that fullness already hints at the end. The rose lives on "Tint," on pure appearance rather than soil or water, so its beauty is both what it eats and what it is. Then the bee turns the flower into "A Dinner," and the beauty is consumed a second time. The timing matters too. Noon is the brightest hour, and "In process of the Noon" makes it sound less like a moment than a procedure with an outcome. Nothing violent happens to the rose. The ordinary progress of the day does the work, and beauty at its peak is already on its way out.
The vocabulary shifts as the poem goes on, from the kitchen ("meals," "Dinner") to the ledger and the law court ("Forfeit," "esteemed," "adored"). A forfeit is something surrendered as a penalty, and esteem is the language of reputation. So the rose never simply dies. It falls out of favour, and that euphemism quietly moves the loss onto us, the admirers who stop admiring. The word "before" in "adored before" carries a lot of weight for so small a word. It marks a past tense that the final line makes permanent. "Bright Mortality" does similar work in miniature, because brightness belongs to life and mortality to death, and the phrase refuses to separate them.
The most open phrase is "Submitting for our unknown sake." "Submitting" implies the rose yields rather than being robbed. "Unknown" could mean we don't know what we gain, or that we don't realise anyone is paying on our behalf. The poem doesn't say. The language of sacrifice may nudge some readers toward a religious reading, but that is an inference, and the poem gives no explanation to support or rule it out.
The form adds to the effect. The poem is in common metre, alternating eight- and six-syllable lines, the pattern of countless hymns. "A full fed Rose on meals of Tint" and "A Dinner for a Bee" show it at once. That steady, almost liturgical beat makes the content stranger, because a tune built for comfort is carrying a very unconsoling idea. Only the even lines rhyme. "Bee" and "Mortality" make an imperfect pair, since the second word trails off on an unstressed syllable, while "before" and "more" make a clean rhyme that closes the poem. The odd lines (Tint, became, fair, sake) are left unanswered, which gives the poem a faintly lopsided feel. Dickinson's dashes matter too. The one after "became" holds the breath before the abstraction arrives, and the final double dash replaces a full stop, so the poem ends without a clear close.
What makes the poem significant is how much it packs into eight lines. It takes a stock subject, the fading rose, and refuses the usual sentiment. Beauty here is a transaction rather than a pity, something given up under terms we never see. The unusual syntax, the capitalised nouns and the dashes are typical of Dickinson's style, and here they make the reader work through the sentence much as the rose works through its noon. The poem offers no comfort at the end, only a fair, bright thing that submits to being "esteemed no more."