Definition of freethinker. : a person who thinks freely or independently : one who forms opinions on the basis of reason independently of authority; especially : one who rejects or is skeptical of religious dogma.
Even though most German speakers may understand what you mean when you say beamer instead of projector, native English speakers will typically be completely lost. * Evidence for the use of the word beamer for BMW cars and motorbikes can be found in the Oxford English Dictionary, see here. An alternative spelling is beemer. Moreover, as explained here, BMW enthusiasts use beamer/beemer for cars and beamer for motorbikes. (Thanks to Eric for the link.)
BEAMS -A beam is identified by its nominal depth, in inches and weight per foot of length. The cross section of a wide-flange beam (WF) is in the form of the letter H. In the example in figure 7-1, 24 WF 76 designates a wide-flange beam section 24 inches deep weighing 76 pounds per linear foot.