Webster’s Revised Unabridged Dictionary · 1913
Bisson
Bis′son (bĭs′sŭn), a. [OE. bisen, bisne, AS. bisen, prob. for bīsēne; bi by + sēne clear, akin to seón to see; clear when near, hence short-sighted. See See.] Purblind; blinding. [Obs.] "Bisson rheum." Shak.