You can't teach an old dog new tricks./

   [you don't say] {interj.}, {informal} - Used to  show  surprise  at
what is said. * /Your ring is a real diamond? You don't say!/ * /"Bill
and Jean are going to get married." "You don't say!"/ Syn.: DO TELL.

   [your] See: HANG ON TO YOUR HAT or HOLD ON TO YOUR HAT or HOLD YOUR
HAT, YOU BET YOUR BOOTS or YOU BET YOUR LIFE.

   [you're telling me] {interj.}, {informal} - Used  to  show  that  a
thing is so clear that it need not be said, or  just  to  show  strong
agreement. * /"You're late." "You're telling me!"/ Compare:  YOU  BET,
YOU SAID IT.

   [you said it] or [you can say that again] {interj.}, {slang} - Used
to show strong agreement with what another person has said.  *  /"That
sure was a good show." "You said it!"/ * /"It sure is hot!"  "You  can
say that again!"/ Compare: SAY A MOUTHFUL.

   [you tell 'em] {interj.}, {slang} - Used to agree with or encourage
someone in what he is saying.  *  /The  drunk  was  arguing  with  the
bartenders and a man cried, "You tell 'em!"/

   [yours truly] {adv. phr.} 1. Signing off at the end of  letters.  *
/Yours truly, Tom Smith./ 2. I, the  first  person  singular  pronoun,
frequently abbreviated as t.y. * /As t.y. has often pointed out.../  *
/T.y. is not really interested in the offer./

   [yum-yum] {interj.}, {informal} - Used usually by or  to  children,
to  express  great  delight,  especially  in  the  taste  of  food.  *
/"Yum-Yum! That pie is good!"/



        Z

   [zero hour] {n.} 1. The exact time when an attack or other military
action is supposed to start. * /Zero hour for the bombers to take  off
was midnight./ 2. The time when an important  decision  or  change  is
supposed to come; the time for a dangerous action. * /It was zero hour
and the doctor began the operation on the man./ * /On the day  of  the
championship game, as the  zero  hour  came  near,  the  players  grew
nervous./

   [zero in on] {v.} 1. To adjust a gun so that it will exactly hit (a
target); aim at. * /Big guns were zeroed in  on  the  enemy  fort./  *
/American missiles have been zeroed in on certain targets, to be fired
if necessary./ 2. {slang} To give  your  full  attention  to.  *  /The
Senate zeroed in on the Latin-American problems./ * /Let's zero in  on
grammar tonight./

   [zip one's lip] See: BUTTON ONE'S LIP.

   [zone defense]  {n.}  A  defense  in  a  sport  (as  basketball  or
football) in which each player has to defend a certain  area.  *  /The
coach taught his team a zone defense because he  thought  his  players
weren't fast enough to defend against individual opponents./

   [zonk out] {v. phr.}, {slang} 1. To fall  asleep  very  quickly.  *
/Can I talk to Joe? - Call back tomorrow, he zonked out./ 2.  To  pass
out from fatigue, or alcohol. * /You won't get a coherent word out  of
Joe, he has zonked out./

   [zoom in] {v. phr.} 1. To rapidly close in on  (said  of  airplanes
and birds of prey). * /The fighter  planes  zoomed  in  on  the  enemy
target./ 2. To make a closeup of someone or something with a camera. *
/The photographer zoomed in on the tiny colibri as it hovered  over  a
lovely tropical flower./