### Clue: Sailor, soldier and university lecturer start to attack spider (9)
### Answer: TARANTULA 
 ### Explanation: Definition: spider
 TAR(informal term for "sailor") + ANT(a social insect, one which might belong to the caste of soldiers) **plus**(and) U(abbrev. for "university") + L(abbrev. for "lecturer") + **1st letter of**(start to) "attack".