HOLLO (2)
Source: 566, 567
hollo (2). Hollo, n. a call to any one at a distance
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Hol″lo (?), v. i. [imp. & p. p. Holloed (?); p. pr. & vb. n. Holloing.] [[See Hollo, interj., and cf. Halloo.]] To call out or exclaim; to halloo. This form is now mostly replaced by hello.