• WordNet 3.6
    • n tricyclic an antidepressant drug that acts by blocking the reuptake of norepinephrine and serotonin and thus making more of those substances available to act on receptors in the brain
    • ***
Century Dictionary and Cyclopedia
    • tricyclic In chem., consisting of three rings or closed chains of atoms (usually o. carbon) united together, with any other atoms united to those of such rings. See tricyclic system.
    • ***


In literature:

If only it had been a tricycle!
"The Freelands" by John Galsworthy
They went through, and he was lucky enough to locate a broken-down tricycle cab.
"Police Your Planet" by Lester del Rey
At last they arrived at the place where a man has tricycles to let out.
"Archie's Mistake" by G. E. Wyatt
The reverend gentleman has, we are glad to say, taken his tricycle with him.
"Boycotted" by Talbot Baines Reed
The sun was near its setting, and the chilly wind had swept the walks clear of tricycles and baby carriages.
"Flint" by Maud Wilder Goodwin
But his last present was best of all: it was a tricycle!
"Golden Moments" by Anonymous
A child's dilapidated tricycle stood on the rickety porch, which was approached by a flight of three unstable-looking steps.
"Marjorie Dean High School Freshman" by Pauline Lester
It was good to see him so independent with his new tricycle.
"Teddy: Her Book" by Anna Chapin Ray
Just behind her was a small boy, sitting very firmly on a little red tricycle.
"In the Mist of the Mountains" by Ethel Turner
Tricycling he was very fond of and kept good machines both at Marlborough and Sandringham.
"The Life of King Edward VII" by J. Castell Hopkins

In poetry:

But, see! There’s a man on the glacier;
His nose is turned into an icicle.
Don’t you know him? It’s Walls the ice-cream man,
Riding round with ice-cream on his tricycle.
"Christmas Day In The Workhouse" by Weston and Lee

In news:

Plastic tricycles scrape to a halt.
Tricycle was hired by Kaguabanga to create the series.
The idea and original concept are the inspiration of Anabella Sosa, CEO of Tricycle, who also was responsible of the series' scripts.
Girl tries out an adaptive tricycle and gets taste of freedom.
Is Your Child Ready for a Tricycle .
A 5-year-old boy riding a tricycle received minor injuries Tuesday afternoon after he was struck by a car backing out of an apartment complex driveway, Atwater police reported.
Tricycle Awake in the World.
New Tricycle Theater a.d. Indhu Rubasingham took a risk in making her debut with "Red Velvet," but the choice has proved a hit.
Mondays— It's Like Wrecking On A Tricycle While Flying Down A Ramp.
That's right Mondays are like wrecking on a tricycle while flying down a ramp— Make sure you wear your helmet.
To view the entire retreat, join Tricycle as a Supporting or Sustaining Member.
Buddhist films and discussion for the Tricycle Community.
Susie Foresman / Red Tricycle.
Dancing the samba, Brazilian waxes, and a tricycle race determined this season's winner.
Courtesy Photo Metroped CEO Wenzday Jane navigates the MAssachusetts Avenue bridge in Boston on a cargo tricycle.