the style of language considered characteristic of crossword clues or solutions—USA, 1925—from the noun ‘crossword’ and the suffix ‘-ese’, forming nouns designating the style of language considered characteristic of the first element
1910—a humorous phonetic transcription of the phrase “goes into”, as originally used at school in arithmetic lessons (as in “4 guzinter 8 two times”)—hence, by extension: a schoolteacher
UK & USA, early 20th century—used in a variety of meanings, among which: ‘a postcard on which the sender could leave the imprint of a kiss’, and ‘a brief statement about kissing’
three daily meals plus a bed for the night (i.e., basic food and shelter)—USA, 1929—chiefly used in relation to the military, prison, and shelters for homeless people—‘hot’ designates a hot meal
to urinate—slang—2nd half of the 20th century—based on the sound /eɪn/, common to the verb, adjective and noun that compose it—‘main vein’ probably refers to the penis