add by mixing or blending on or attaching; "work in the butter and the dough will get the right consistency"; "In his speech, the presidential candidate worked in a lot of learned words"
any large scale calamity (especially when thought to be sent by God)
any epidemic disease with a high death rate
a serious (sometimes fatal) infection of rodents caused by Yersinia pestis and accidentally transmitted to humans by the bite of a flea that has bitten an infected animal
lengthen in time; cause to be or last longer; "We prolonged our stay"; "She extended her visit by another day"; "The meeting was drawn out until midnight"
lengthen or extend in duration or space; "We sustained the diplomatic negotiations as long as possible"; "prolong the treatment of the patient"; "keep up the good work"
(in an election with more than 2 options) the number of votes for the candidate or party receiving the greatest number (but less that half of the votes)
the state of being plural; "to mark plurality, one language may add an extra syllable to the word whereas another may simply change the vowel in the existing final syllable"