Definitions of withdraw:

verb: remove (a commodity) from (a supply source)
verb: pull back or move away or backward
verb: withdraw from active participation
verb: retire gracefully
verb: break from a meeting or gathering
verb: release from something that holds fast, connects, or entangles
verb: lose interest
verb: cause to be returned
verb: keep away from others
verb: take back what one has said
verb: remove something concrete, as by lifting, pushing, taking off, etc. or remove something abstract
Example: "This machine withdraws heat from the environment"
verb: make a retreat from an earlier commitment or activity