a, o, b, e, l, n, h, m, r, t, i, u are letters that make 'automobile horn'
OR, bile, OB, obi, mob, RN, AU, ut, mobile, il, horn, tom, auto, automobile, Mobile, IL, MO, Ob, Tom, LE, Bi, Au, Ho, Mo, Rn, UT, mo are words within 'automobile horn'
1 possible definitions for 'automobile horn'
Under this definition, automobile horn is a noun and has the following properties:
car horn, motor horn, horn, hooter have the same meaning as 'automobile horn'
'automobile horn' can be a type of alarm, warning device, alarm system.
'automobile horn' can be a part of auto, automobile, motorcar, car, machine.
horn button is a part of automobile horn.
hoot is a derivative of automobile horn.