adv. 1. In the first place; principally; preëminently; above; especially. [ 1913 Webster ]
Search through this garden; leave unsearched no nook; But chiefly where those two fair creatures lodge. Milton. [ 1913 Webster ]
2. For the most part; mostly. [ 1913 Webster ]
Those parts of the kingdom where the . . . estates of the dissenters chiefly lay. Swift. [ 1913 Webster ]