* Lacking in enthusiasm or joy: This is the most likely meaning. A person who is "poor in spirit" might be apathetic, disheartened, or depressed. They lack the energy or motivation to engage with life.
* Spiritually bankrupt: This interpretation focuses on the idea that the person lacks a strong spiritual foundation or connection. They may be cynical, disillusioned, or lacking in faith.
* Uncaring or selfish: This interpretation is less common, but it's possible that "poor in spirit" could be used to describe someone who is lacking in compassion or empathy. They might be focused solely on themselves and their own needs.
It's important to consider the context in which the expression is used to understand the intended meaning. If you can provide more context, I can give you a more specific interpretation.