definition of
need

[1] #1 need v. [necessitate, ask, postulate, require, take, involve, call for, demand] 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";. wn

[2] #2 need v. [want, require] have need of; "This piano wants the attention of a competent tuner". wn

[3] #3 need n. [demand] 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". wn

[4] #4 need n. [want] anything that is necessary but lacking; "he had sufficient means to meet his simple needs"; "I tried to supply his wants". wn

[5] #5 need n. [motivation, motive] 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". wn