How many of these four-letter words do you know?

1.      aeon: an immeasurably long period of time

2.      apex:  the uppermost point, for example, of a mountain, often a narrowed or pointed end

3.      bane: a source of harm or ruin; a curse

4.      berm: a narrow edge of land along the side of a road, also called the road's shoulder

5.      coif: a tight-fitting cap worn under a veil, as by nuns

6.      coir: the fibre obtained from the husk of a coconut, used in making rope and matting and as a medium for cultivating plants

7.      crud: a substance which is considered unpleasant or disgusting because of its dirtiness

8.      dado: the lower part of an interior wall when specially decorated or faced

9.      dhow:  a lateen-rigged sailing vessels with one or two masts, used especially along the eastern coast of Africa, Arabia and the Indian Ocean

10.  dais: a raised platform, as in a lecture hall, for speakers or honoured guests

11.  ecru:  light grayish-yellowish brown; beige colour

12.  eyot: a small island in a river like the word, a synonym for ait

13.  élan: a distinctive style or flair characterised by vigour, enthusiasm and liveliness

14.  fell: a hill or stretch of high moorland, especially in northern England

15.  flue: a duct, pipe, or opening in a chimney for conveying exhaust gases from a fireplace, furnace, water heater or boiler to the outside

16.  glee: playful exhilaration, joy or delight, merriment, mirth; music, entertainment

17.  gyro:  a sandwich especially of lamb and beef, tomato, onion, and yogurt sauce on pita bread

18.  helm: a ship’s steering wheel

19.  icon: a picture, a symbol or graphic representation

20.  iota:  very small amount; a little bit

21.  jinx:  something that brings bad luck

22.  kiln: an oven for hardening, baking  or drying grain, meal, or clay, especially a brick-lined oven used to fire ceramics

23.  kine: the plural of cow

24.  lynx: a type of wild cat found in North America with thick soft fur, a black-tipped short tail and tufted ears

25.  mien: a person's appearance, bearing or manner, especially as an indication of their character,  personality or mood

26.  nape: the back of the neck

27.  okra: a flowering plant with edible green seed pods, used mainly in soups or stews, also called ladies' fingers, gumbo or bhindi  

28.  onus: the burden of proof; an obligation

29.  orzo: pasta shaped like grains of rice, usually used in soups and casseroles

30.  pelf: rubbish, trash; something worthless or ill-gotten

31.  ping: a protocol that sends a message to another computer and waits for acknowledgment, often used to check if another computer on a network is reachable

32.  scat: animal fecal droppings (poop)

33.  shiv: a knife, razor, or other sharp or pointed implement, especially one used as a weapon

34.  tael: a unit of weight used in eastern Asia, roughly equivalent to 38 grams

35.  tutu: a short skirt, often consisting of many layers of gathered sheer fabric, worn by ballerinas

36.  udon:  Japanese wheat noodles

37.  ulna: the bone extending from the elbow to the wrist on the side opposite to the thumb in humans

38.  vane:  a movable device attached to an elevated object (such as a roof) that shows the direction of the wind

39.  welt: a ridge or bump on the skin caused by an allergic reaction or by a lash or blow

40.  zarf: the cardboard sleeve that fits around the bottom of take-away cup