la·dy 
/ˈleɪdi/ noun
plural la·dies /ˈleɪdi/ noun [count] 1 : a woman who behaves in a polite way
▪ Her mother was always telling her to act like a lady. ▪ She's a real lady. 2 : woman
▪ He bumped into some lady walking to the bus stop. ▪ (chiefly US, informal) She's one feisty/sexy lady, I can tell you! ▪ He helped a little old lady cross the street. — used especially in polite speech or when speaking to a group of women ▪ The lady behind the counter will take your order. ▪ She told her little boy to say “thank you” to the nice lady for helping them. ▪ Would someone please get the/this lady a chair? ▪ Good evening, ladies and gentlemen! ▪ Please step this way, ladies. — sometimes used informally in U.S. English when speaking to one woman ▪ Hey, lady, you forgot your purse! [=(more commonly and politely) excuse me, ma'am, you forgot your purse] — sometimes used informally before another noun ▪ a lady doctor [=(more commonly and politely) a female/woman doctor] ◊The phrase young lady is used in informal speech as a form of address for a girl or young woman. An angry parent speaking to a daughter, for example, might address her as young lady.
▪ Just where do you think you're going, young lady?! — see also bag lady, cleaning lady, dragon lady, lady luck at 1luck 3 : a woman of high social position
▪ the ladies of society 4 a informal : a man's girlfriend
▪ I've been wanting to meet his new lady.
b chiefly Brit, old-fashioned : a man's wife
▪ What would you and your good lady like to drink? 5 Lady : a woman who is a member of the nobility — used as a title ▪ Lady Margaret
▪ Her mother was always telling her to act like a lady. ▪ She's a real lady.
▪ He bumped into some lady walking to the bus stop. ▪ (chiefly US, informal) She's one feisty/sexy lady, I can tell you! ▪ He helped a little old lady cross the street. — used especially in polite speech or when speaking to a group of women ▪ The lady behind the counter will take your order. ▪ She told her little boy to say “thank you” to the nice lady for helping them. ▪ Would someone please get the/this lady a chair? ▪ Good evening, ladies and gentlemen! ▪ Please step this way, ladies. — sometimes used informally in U.S. English when speaking to one woman ▪ Hey, lady, you forgot your purse! [=(more commonly and politely) excuse me, ma'am, you forgot your purse] — sometimes used informally before another noun ▪ a lady doctor [=(more commonly and politely) a female/woman doctor] ◊The phrase young lady is used in informal speech as a form of address for a girl or young woman. An angry parent speaking to a daughter, for example, might address her as young lady.
▪ Just where do you think you're going, young lady?! — see also bag lady, cleaning lady, dragon lady, lady luck at 1luck
▪ the ladies of society
▪ I've been wanting to meet his new lady.
b chiefly Brit, old-fashioned : a man's wife
▪ What would you and your good lady like to drink?
it ain't over until/till the fat lady sings
US, informal — used to say that the final result of something (such as a sports contest) has not yet been decided and could still change ▪ We're losing, but remember: it ain't over till the fat lady sings. [=the game is not over; there is still a chance that we could win]
