Question

Need a collective noun for dust with 5 letters starts with S third letter E.

Answer 1

Behold (v. t.) To have in sight; to see clearly; to look at; to regard with the eyes. ...... A verbal noun ending in -e, preceded by to and usually denoting purpose or end; -- called also

Answer 2

Noun refers to the naming words which name the place, person, thing or animal. For example: I live in Delhi. Herein 'Delhi' is the noun.

Noun are categorized into various types. One of it being collective noun.

A singular noun naming a collection or group is Collective noun.   Collective noun refers to the kind of noun which refer to the name of people, thing or anything in collective. For instance bundle of sticks, herein 'bundle' is collective noun.

Therefore, the collective noun for dust is 'cloud', 'layer' or 'pile.'