gain possession of by prior right or opportunity, especially so as to obtain the right to buy (land)
take the place of or have precedence over; "live broadcast of the presidential debate preempts the regular news hour"; "discussion of the emergency situation will preempt the lecture by the professor"
loaded to excess or impeded by a heavy load; "a summer resort...encumbered with great clapboard-and-stucco hotels"- A.J.Liebling; "a hiker encumbered with a heavy backpack"; "an encumbered estate"