Entry 1 sense Webster, 1913 Bulbous /bŭl'-bəs/ · Bulb·ous · IPA /ˈbʌlbəs/ 01 a. Having or containing bulbs, or a bulb; growing from bulbs; bulblike in shape or structure. 1. Having or containing bulbs, or a bulb; growing from bulbs; bulblike in shape or structure.