a) to make something fit exactly together

German translation:

dovetail (fig.) = zusammenpassen, einpassen, verzahnen, aufeinander abstimmendovetail (tech) = verzinken, eine Schwalbenschwanzverbindung herstellendovetail (tech.) = Schwalbenschwanzverbindung, Zinke

Sample:

UK bookseller Waterstones is to sell Amazon's Kindle book-reader and launch other Kindle digital services. Waterstones says the deal will DOVETAIL with its current store refurbishment scheme, which is creating dedicated areas for digital books, free wireless internet and new coffee shops.(BBC News)---One place hoping to become known for its wine is China, where improved growing conditions DOVETAIL with rising demand as the country’s middle class develops a taste for chardonnay.(BusinessWeek magazine)