American Heritage Dictionary
(9)
Century Dictionary
(3)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
Cut back, deadhead, or just rip away crappy brown plants that are serving no useful purposes.— Gardening While Intoxicated
Beggar's Tune was the mellow hippie / deadhead / folk joint and then there was Pipe Dreams.— Expecting Rain

Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word about once a year.