letdown

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letdown let down

Main Entry: let·down
Pronunciation: 'let-"daun
Function: noun
1 a : DISCOURAGEMENT, DISAPPOINTMENT <his latest novel is a letdown> b : a slackening of effort : RELAXATION
2 : the descent of an aircraft or spacecraft to the point at which a landing approach is begun
3 : a physiological response of a lactating mammal to suckling and allied stimuli whereby previously secreted milk from the acini is expelled into ducts and drawn through the nipple