Adverbial has 3 senses

• closely(r = adv.all) - in a close relation or position in time or space; "houses set closely together"; "the onsets were closely timed"; "was closely involved in monitoring daily progress"
• closely(r = adv.all) close, tight - in an attentive manner; "he remained close on his guard"
• closely(r = adv.all) intimately, nearly - in a close manner; "the person most nearly concerned"; "the two phenomena are intimately connected"