adjective.
Very surprising or shocking; to such a degree as to cause astonishment.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
tending to cause suspension of regular breathing
Word Usage
"On the series Valentine can be seen visiting Llangennith Beach on the Gower and Llansteffan Beach, south of Carmarthen, both of which he describes as "breathtaking"."