Denshi Jisho — Online Japanese dictionary

大幅 おおはば 1: big; large; drastic; substantial;
2: (Noun) full-width cloth (approx. 72 cm wide for traditional Japanese clothing; approx. 140 cm wide for Western clothing)
Common word, Na-adjective, Noun 
大幅 おおはばもの broadcloth
Noun 
大幅削減 おおはばさくげん sharp reduction; drastic cut
Noun 
大幅刷新 おおはばさっしん widescale reform
Noun 

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