There are a number of different synonyms or phrases that can be used in place of "auxiliary air intake." These include "secondary air intake," "auxiliary air inlet," "extra air intake," "supplementary air intake," or simply "additional air vent." Each of these variations serves to convey the same general meaning - that there is an alternate inlet through which air can enter a system or device. This may be used to aid with combustion, to prevent overheating, or to provide additional cooling. Depending on the context in which the phrase is being used, one term may be more appropriate or accurate than another.