| SPI | weak in willpower |
|---|---|
| SPI | the quality of lacking a strong character |
| SPI | early model harpsichord with only one string per note |
| SPI | small and compactly built upright piano |
| SPI | suitability for spinning or capability of being spun (used of textile fibers) |
| SPI | large and usually triangular headsail |
| SPI | fisherman's lure |
| SPI | board game equipment that consists of a dial and an arrow that is spun to determine the next move in the game |
| SPI | someone who spins (who twists fibers into threads) |
| SPI | (British) a copse that shelters game |
| SPI | creating thread |
| SPI | rotating rapidly about an axis |