Tying up guards for starters, then woman regularly breaks into BT Tower (7)
I believe the answer is:
tugboat
'tower' is the definition.
(something which tows)
'tying up guards for starters then woman regularly breaks into bt' is the wordplay.
'tying up' becomes 'tu' (this might be a standard abbreviation of which I'm unaware).
'for starters' indicates taking the first letters.
'then' means one lot of letters go next to another.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'breaks into' is an insertion indicator (inserted letters break into the word).
The first letter of 'guards' is 'g'.
The alternating letters of 'woman' are 'oa'.
'oa' put into 'bt' is 'boat'.
'tu'+'g'+'boat'='TUGBOAT'
Can you help me to learn more?
(Other definitions for tugboat that I've seen before include "Ship pulling a larger one" , "water tower" , "Small vessel pulling a big one" , "Harbour craft" , "Vessel towing larger vessels" .)