Wiktionary:

smoke | smoked [past tense] | smoking [present participle] | smokes [3rd-person singular present] | cig | ciggy | cancer stick | fag | Big Smoke | holy smoke | no smoke without fire | secondhand smoke | second-hand smoke | sidestream smoke | smoke alarm | smoke and mirrors | smoke bomb | smokebox | smoke detector | smoke-dried | smoke eater | smoke-filled room | smoke-free zone | smokeho | smokehouse | smokejack | smoke jumper | smokejumper | smokeless | smoke ring | smokescreen | smoke screen | smoke-screen | smoke signal | smokestack | smoke tree | Smokey the Bear | throwing smoke | chain-smoke | smoker | smoke out

Summary:

[uncountable] The visible vapor/vapour, gases, and fine particles given off by burning or smoldering material. | [informal, countable noun] A cigarette. | [informal, countable noun, never plural] An instance of smoking a cigarette, cigar, etc.; the ...  (34 of 286 words, 16 senses, 1 etymology, pronunciation)

Link:

http://en.wiktionary.org/wiki/smoke  [cite]

Britannica:

smoke tree

Summary:

any of several plant species whose foliage suggests clouds of smoke. Dalea spinosa is a spiny, grayish green shrub, of the pea family, native to arid ...  (26 of 102 words)

Link:

http://www.britannica.com/EBchecked/topic/550031/smoke-tree  [cite]

Wikipedia:

Smoke tree | "Smoke tree"

Summary:

may refer to any of several plants, some of whose parts are finely divided and give the appearance of smoke from a distance: Cotinus, a common garden shrub | Psorothamnus spinosus, a spiny tree of the American desert  (37 of 81 words, 2 senses)

Link:

http://en.wikipedia.org/wiki/Smoke tree  [cite]

Merriam-Webster:

smoke tree

Summary:

either of two small shrubby trees (genus Cotinus) of the cashew family with large panicles of minute flowers that suggest a cloud of smoke: one (C. ...  (26 of 60 words, 2 senses)

Link:

http://www.merriam-webster.com/dictionary/smoke tree  [cite]

Random House:

smoke tree | American smoke tree, chittamwood [sense-specific] | Venetian sumac [sense-specific]

Summary:

a tree, Cotinus obovatus, of the cashew family, native to the southeastern U.S., having egg-shaped leaves and large clusters of small white flowers. | ...  (23 of 53 words, 2 senses)

Link:

http://dictionary.infoplease.com/smoke-tree  [cite]

Encarta:

smoke tree | smoke trees [plural]

Summary:

a bush or small tree whose clusters of small flowers resemble puffs of smoke. Genus Cotinus.  (16 of 29 words)

Link:

http://encarta.msn.com/dictionary 1861708953/definition.html  [cite]