prep

• Used to indicate location, inclusion, or position within spatial, temporal or abstract limits.
  "Many English nouns in -is form their plurals in -es, while those in kn- are pronounced just /n/-."
• Used to indicate means, medium, format, genre, or instrumentality.
  "Please pay me in cash — preferably in tens and twenties."

verb

• (obsolete, transitive) To enclose.
• (obsolete, transitive) To take in; to harvest.
  "He that ears my land spares my team and gives me leave to in the crop."

adv

• (in combination, after a verb) Denotes a gathering of people assembled for the stated activity, sometimes, though not always, suggesting a protest.
  "sing-in, pray-in, hug-in; see also be-in, love-in, sit-in, teach-in."

noun

• (chiefly in the plural) One who, or that which, is in; especially, one who is in office.
  "This memoir has nothing to do with the question between the ins and the outs; it is intended neither to support nor to assail the administration; it is general in its views upon a general and national subject; […]"
• (sports) The state of a batter/batsman who is currently batting; see innings.