#1 weak a. wanting in physical strength; "a weak pillar". wn
#2 weak s. [watery, washy] overly diluted; thin and insipid; "washy coffee"; "watery milk"; "weak tea". wn
#3 weak s. [unaccented, light] (used of vowels or syllables) pronounced with little or no stress; "a syllable that ends in a short vowel is a light syllable"; "a weak stress on the second syllable". wn
#4 weak s. [fallible, frail, imperfect] wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings; "I'm only a fallible human"; "frail humanity". wn
#5 weak s. tending downward in price; "a weak market for oil stocks". wn
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