Random drunk clasping old security guard (7)

I believe the answer is:

doorman

I'm a little stuck... Click here to teach me more about this clue!

'security guard' is the definition.
'doorman' can be an answer for 'guard' (type of guard or attendant). I am not certain of the 'security' bit.

'random drunk clasping old' is the wordplay.
'drunk' indicates an anagram.
'clasping' indicates putting letters inside (inserted letters are clasped).
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'random' with letters rearranged gives 'dorman'.
'dorman' going around 'o' is 'DOORMAN'.

Can you help me to learn more?

(Other definitions for doorman that I've seen before include "Bouncer" , "hotel employee?" , "Entry attendant" , "One who may help guest" , "Commissionaire" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.