Definition of need:
a condition requiring relief; "she satisfied his need for affection"; "God has no need of men to accomplish His work"; "there is a demand for jobs"
anything that is necessary but lacking; "he had sufficient means to meet his simple needs"; "I tried to supply his wants"
the psychological feature that arouses an organism to action toward a desired goal; the reason for the action; that which gives purpose and direction to behavior; "we did not understand his motivation"; "he acted with the best of motives"
a state of extreme poverty or destitution; "their indigence appalled him"; "a general state of need exists among the homeless"
require as useful, just, or proper; "It takes nerve to do what she did"; "success usually requires hard work"; "This job asks a lot of patience and skill"; "This position demands a lot of personal sacrifice"; "This dinner calls for a spectacular dessert"; "This intervention does not postulate a patient's consent"
have need of; "This piano wants the attention of a competent tuner"
have or feel a need for; "always needing friends and money"