TIE UP

verb Date: 1530 transitive verb to attach, fasten, or bind securely, 2. to connect closely ; join , to cause to be linked so as to depend on or relate to something, 3. to place or invest in such a manner as to make unavailable for other purposes , to restrain from normal movement, operation, or progress , 4. to keep busy , to preempt the use of , intransitive verb dock , to assume a definite relationship