しめる · shimeru
JLPT N4
to close, to fasten, to tie, to tighten, to conclude, to finish
締めます (shimemasu) is the polite non-past form of 締める.
This is the formal, transitive form of the verb "shimeru". It indicates that someone closes, fastens, ties, tightens, or concludes something. It is often contrasted with 閉まる (shimaru), which is the intransitive form (something closes by itself). It can refer to closing doors/windows, fastening seatbelts, tying shoelaces, tightening screws, or concluding a meeting/business.