ret·ro·rock·et 
(rĕtrō-rŏk′ĭt)
(rĕtrō-rŏk′ĭt)n.
A rocket engine used to retard, arrest, or reverse the motion of a vehicle, such as an aircraft, missile, or spacecraft.
- syconium
- sycophancy
- sycophant
- sycophantic
- sycophantical
- sycophantically
- sycosis
- Sydenham
- compound
- compoundable
- compound-complex sentence
- compounder
- compound eye
- compound fraction
- compound fracture
- compound gland
- compounding pharmacy
- compound interest
- compound leaf
- compound lens
- compound machine
- compound microscope
- compound number
- compound sentence
- comprador