#1
ruggedness n. [
huskiness, toughness] the property of being big and strong
. wn #2
ruggedness n. the quality of being topologically uneven; "the ruggedness of the mountains"
. wn #3
ruggedness n. [
hardness] the quality of being difficult to do; "he assigned a series of problems of increasing hardness"; "the ruggedness of his exams caused half the class to fail"
. wn