hollowing

verb

1. (form-of, gerund, participle, present)present participle and gerund of hollow
2. (form-of, gerund, participle, present)present participle and gerund of hollow

noun

1. The process by which something becomes hollowed, or the result of that process.

   “Near-synonyms: hollowing out, hollow, cavity, concavity, depression”

   “Such hollowing is not seen in the smaller otoliths figured by Campana (herein reproduced on Pl. 5, Fig. 1) and by Ohe, and it may be a feature that […]”

2. The act of one who hollows (hollos); a cry or shouting.

   “Near-synonyms: hallooing, halloo, hollering, holler, bellowing, bellow”

   “At length, about three o'clock in the morning, we heard the distant hollowings of our watermen, and soon after refreshed ourselves with copious draughts of the delicious water of the Nile.”