in the middle► in the middle · At the back there was a small garden with a fishpond in the middle.· I was never at the top of my class. I was somewhere in the middle, I suppose.in the middle of · Lizzie woke up in the middle of the night with a toothache.· At the time, the country was in the middle of an economic recession.
► middle: the middle drawer/shelf/finger etc the one in the middle: · You'll find the scissors in the middle drawer of my desk.· Jane was wearing a gold ring on her middle finger.· There were three children in my family, and I was the middle one.
► central in the middle of an area, country, or town: · The houses face onto a central courtyard.· the tropical rainforest in central Africa· central London
► centre British /center American: centre door/panel/page etc the door etc that is in the middle with others on either side: · On the center panel of the screen there is a painting of a Greek goddess.· There's usually a picture of some glamorous girl on the centre page.
► at/in the centre British /at/in the center American exactly in the middle of something: · It was a huge room with a high ceiling and an oak table in the centre.at/in the centre of: · At the center of the atom is the nucleus.· The city of Turin stands at the centre of the Piedmontese plain.
► halfway at the middle point between two places or of a period of time or event: halfway across/between/down/up etc: · Our car broke down halfway across the bridge.· We were halfway down the mountain when it started snowing.· Joe was pretty unhappy and left the college halfway through the year.the halfway mark (=the middle point of something): · The Scots opened up a 29-17 lead, and at the halfway mark they were still in front.
► mid- in or near the middle of a period of time: · The house was built in the mid-18th century.· As the value of the US dollar fell in the mid-1980s, so did the value of UK reserves.· Let's meet again mid-week.
► midway at the middle point of a distance, a period of time, or a set of numbers: midway between/through: · The islands lie in the Indian Ocean midway between Madagascar and Tanzania.· United took the lead midway through the first half.· At a guess, I'd say he was midway between 50 and 60.
► midpoint the point that is an equal distance from either end of a process or scale: · The Redskins and the Giants were the leaders as the midpoint in the season drew near.midpoint of: · By the midpoint of the twentieth century, the economy had begun to improve.
middle: 
a young woman in her mid-twenties