'blend in' definitions:

Definition of 'blend in'

From: WordNet
verb
Blend or harmonize; "This flavor will blend with those in your dish"; "This sofa won't go with the chairs" [syn: blend, go, blend in]
verb
Cause (something) to be mixed with (something else); "At this stage of making the cake, blend in the nuts" [syn: blend in, mix in]