the.com/bind
To tie two things so thoroughly they file joint taxes.
means To fasten, tie, or constrain something — physically, legally, or chemically — so it stays put or is obligated.
from From Old English bindan, the same root that gives us bond and bundle, all descended from the Proto-Germanic word for tying up.
ProgrammingLinks a name to a value or function.
Legal forceA binding contract can be enforced in court.
ChemistryMolecules bind to receptors like keys in locks.
Tight spotA bind also means an awkward, stuck situation.