strap-on
That can be attached using one or more strapsThat can be attached using one or more straps.
/ˈstɹæpɒn/
Meaning
2 senses(not comparable)That can be attached using one or more straps.
(not comparable)Of a booster rocket, that is mounted on the outside of a launch vehicle (typically around the first stage) to provide an additional boost at lift-off, ultimately separating after the first few minutes of ascent.
See also
neighbours in the dictionaryDictionary text adapted from Wiktionary (Wiktionary contributors, CC BY-SA 4.0) and Open English WordNet / Princeton WordNet (CC BY 4.0, WordNet License); shared under CC BY-SA 4.0. Example sentences and recordings are credited where they appear.