ˌrock-ˈsolid BrE AmE , rock solid adjective
1 . rock-solid things can be depended on and trusted not to change:
a rock-solid guarantee
2 . very hard and not likely to break
ˌrock-ˈsolid BrE AmE , rock solid adjective
1 . rock-solid things can be depended on and trusted not to change:
a rock-solid guarantee
2 . very hard and not likely to break
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012