All the letters I can write
Exact repetition
Dickinson copied the entire stanza verbatim. This isn't a second verse—it's emphasis, obsession, or possibly two manuscript versions preserved together.
Textile language
**Velvet** and **plush** are fabrics—she's describing a kiss as if it were woven material. The physical texture of words becomes the physical texture of lips.
Ruby undrained
**Ruby** = red = blood = life force. **Undrained** means full, untapped. She's holding something vital in reserve, waiting to be consumed.
Hummingbird feeding
Hummingbirds sip nectar—quick, delicate, extracting sweetness. **Play** means 'pretend' here. She wants the kiss to be light, not draining her completely.