cell cell /ˈsɛl/

noun

1. () Any small compartment  ( cell )
   any small compartment
    The cells of a honeycomb
   the cells of a honeycomb
   
2. () (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals  ( cell )
   (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
    The human body is composed of trillions of cells, each playing a vital role.
   The human body is composed of trillions of cells, each playing a vital role.
   
   
3. () A device that delivers an electric current as the result of a chemical reaction  ( electric cell , cell )
   a device that delivers an electric current as the result of a chemical reaction
    The flashlight stopped working because the cell was depleted.
   The flashlight stopped working because the cell was depleted.
   
   
4. A room where a prisoner is kept  ( cell , jail cell , prison cell )
   a room where a prisoner is kept
    The prisoner was locked up in his cell for 23 hours a day
   The prisoner was locked up in his cell for 23 hours a day
   
   
5. Small room in which a monk or nun lives  ( cell , cubicle )
   small room in which a monk or nun lives
   
   
6. A hand-held mobile radiotelephone for use in an area divided into small sections, each with its own short-range transmitter/receiver  ( cell , cellphone , cellular phone , cellular telephone , mobile phone )
   a hand-held mobile radiotelephone for use in an area divided into small sections, each with its own short-range transmitter/receiver
    I forgot my mobile phone at home today, and it's been so inconvenient
   I forgot my mobile phone at home today, and it's been so inconvenient
   
   
7. A small unit serving as part of or as the nucleus of a larger political movement  ( cell , cadre )
   a small unit serving as part of or as the nucleus of a larger political movement
   

 second hand second hand /ˈsɛkənd hænd/

adverb

1. From a source of previously owned goods  ( second hand )
   from a source of previously owned goods
    I prefer to buy second hand
   I prefer to buy second hand
   

noun

1. () An intermediate person; used in the phrase 'at second hand'  ( second hand )
   an intermediate person; used in the phrase 'at second hand'
    He could learn at second hand from books
   he could learn at second hand from books
   
2. Hand marking seconds on a timepiece  ( second hand , seconds hand )
   hand marking seconds on a timepiece
    The second hand of the clock seemed to tick slower as I awaited the announcement.
   The second hand of the clock seemed to tick slower as I awaited the announcement.
   
   

 vena jugularis vena jugularis /ˈviːnə dʒʊˈɡjʊlərɪs/

noun

1. Veins in the neck that return blood from the head  ( jugular , jugular vein , vena jugularis )
   veins in the neck that return blood from the head
   
   

 Mutillidae Mutillidae /mjuːˈtɪlɪdiː/

noun

1. A family of wasps  ( family Mutillidae , Mutillidae )
   a family of wasps