ironclad
adjective /ʌɪənˈklad 
/
/1Covered or protected with iron.
1.1Impossible to contradict, weaken, or change: an ironclad guarantee...
- It's a fight they probably would lose, but it's time for a team to take a stand and challenge the ironclad nature of contract guarantees.
- It's an explicit, rock solid, ironclad guarantee.
- He hoped that with the ironclad guarantees incorporated in the Constitution, the Services would resolutely stand by the Constitution and the law even under the most trying circumstances.
noun /ˈʌɪənklad / historical
/ historicalA 19th-century warship with armour plating.The £13 million ship, which has been named Research Vessel Triton, is said to represent the most radical step forward in warship design since the introduction of the ironclads....
- Bulloch, too, was initially unsuccessful in purchasing any ironclads in England; however, in February 1862, Mallory's hopes for obtaining European-built ironclads rose.
- As his vignette indicated, the initial stages of action saw the Russians landing damaging blows on the Japanese ironclads.
- throwing stick
- throw in one's lot with
- throw in the towel (or sponge)
- throw money at
- throw off
- throw off at
- throw of the dice
- throw oneself at
- throw oneself into
- throw oneself on (or upon)
- throw oneself on someone's mercy
- throw one's hand in
- throw one's hat in (or into) the ring
- throw one's hat in the ring
- throw one's money about/around
- throw one's toys out of the pram
- throw one's weight about (or around)
- throw one's weight behind
- throw (or cast or shed) light on
- throw (or catch) someone off balance
- throw (or chuck)a seven
- throw (or knock) someone for a loop
- throw (or pour) cold water on
- throw-over
- throw people together