WordNet sense 1 (perennial of arctic Europe having large white flowers with inflated calyx):

Silene uniflora, Silene vulgaris

WordNet sense 2 (bluish-green herb having sticky stems and clusters of large evening-opening white flowers with much-inflated calyx; sometimes placed in genus Lychnis):

white campion, evening lychnis, Lychnis alba, Silene latifolia, white cockle