The England striker is leaving Tottenham for TFC.
"In life when a massive opportunity comes your way, sometimes it is not always easy, leaving your home town and the club you have been with for nine years - to come here and have a reception like that is such a great feeling. I feel at home already," Defoe said.
"I come here and know I will give something, not for the wrong reasons, but to do my best for the club to win trophies.
"It is important for me that I still feel sharp and strong.
"I will give 100 per cent every game, work hard like I have always done and hopefully bring a lot of goals to the team, to win trophies (because) that is what it is about."
Defoe continued: "I can’t wait to get started and to showcase my skills in a different league.
"For me it is a dream come true because it is always something I wanted to do (play in the MLS), even before I was aware of the interest (from Toronto).
"I feel blessed and honoured. I am looking forward to it so much."
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