(historical) United States Treasury notes, made during the Civil War, in denominations of $50 and above, bearing interest at the rate of seven and three tenths (thirty hundredths) percent annually. Within a few years they were all redeemed or funded.

(military, US) A person who has qualified for "Craftsman" level of skill in the United States Air Force, with more training than "Journeyman" (five-level), but less than a "Superintendent" (nine-level)

Obsolete form of at sixes and sevens.

(slang) A complete range; a whole lot; used with of and a noun or occasionally an adjective.

Less common spelling of seven-eighths

Seven of eight equal parts (7/8, ⅞, 0.875).

plural of seven-level

(aviation) A Boeing 777, a wide body twinjet used for commercial airlines.

A person who is seven feet tall. / An object that is seven feet in length or height.

(obsolete) A week.