to

1. (obsolete) As a.Examples: "With God to friend (with God as a friend); with The Devil to fiend (with the Devil as a foe); lambs slaughtered to lake (lambs slaughtered as a sacrifice); took her to wife (took her as a wife); was sold to slave (was sold as a slave)."obsolete

2. (arithmetic) Used to indicate that the preceding term is to be raised to the power of the following value; indicates exponentiation.Examples: "Three squared or three to the second power is nine."; "Three to the power of two is nine."; "Three to the second is nine."

3. (time) Preceding (the stated hour).Examples: "What's the time? – It's quarter to four in the afternoon (or 3:45 pm)."Antonyms: past

4. (time) Preceding (the stated hour).Examples: "It’s quarter to (3:45, or 4:45, or whatever time ending in 45 would make the most sense)"Antonyms: pastinformal

5. (Canada, Cornwall (UK), Newfoundland, Wales, West Midlands (UK)) At.Examples: "Stay where you're to and I'll come find you, b'y."; "Where are you to?"; ""What's that to you?" said Trevool, rather sharply, "worn't I to a berrin? […]"CanadaNewfoundlandWales

1. (regionalism) Toward a closed, touching or engaging position.Examples: "Please push the door to."; "He went in his room, pushed the door to, without fastening the latch."; "Aware of the loud beating of my own heart I pulled the door to against the increasing rain."Synonyms: closed, shutAntonyms: open, ajarnot-comparable

2. (nautical) Into the wind.not-comparable

1. (mild intensifier, colloquial, chiefly North India) a filler word common amongst urban Indians.Examples: "I am to so bored right now."IndiaNorthcolloquial

1. (informal) Abbreviation of Toronto: the largest city in Ontario and in Canada.abbreviationalt-ofinformal

1. (sports) Initialism of time-out.abbreviationalt-ofinitialism

2. (sports) Initialism of turnover.abbreviationalt-ofinitialism