CJK Unified Ideograph-7Ab6

It means poverty or depletion, never one fixed reaction.

The Chinese sense is poor or impoverished, with an old pedigree: the historical record lists a Qin-slip glyph, while the related form 寠 carries the older dictionary explanation tying poverty to a household lacking ritual resources. It survives mainly in literary compounds, not everyday chat.

In Japanese, the same graph lives in 窶れる, read yatsureru, meaning to become gaunt, worn, or shabby. Dictionaries illustrate that sense from The Tale of Genji, around 1001–14. So Chinese stresses having too little; Japanese stresses looking worn down by illness, hardship, or age.

Why does 窶 change meaning by language?

The surrounding word picks the meaning.

貧窶 keeps the poverty sense. In classical Chinese, 窶數 names a device for carrying a basin on the head, and in 甌窶 the graph is read lou for a small, narrow high place. Those are dictionary branches, not hidden emoji meanings.

寠 is the semantic variant in the lexicographic record, 窭 is the simplified form, and 婁 supplies the phonetic series. They are historically connected spellings, not lookalike coincidences.

What should I do if someone sends 窶?

Ask for the rest of the word before reacting.

If someone sent me 窶 by itself, I would not guess exhausted, broke, or sick from that one stroke-bundle. Check whether the message is Chinese or Japanese, and whether it belongs to 貧窶, 窶れる, or a classical quotation. When you use it, send the full word.