mud that is sent by swallows and used to build their nest.

swallow

a swallow (bird)

a barn swallow

a place name, such as that of Tsubame City in Niigata Prefecture

threadfin, specifically striped threadfin

a Pacific swift (Apus pacificus)

to make [something] / to cook / to write a literary work / to grow, to raise / to cultivate ability, to train / to draw up, form, establish / to make an acquaintance

作る: make - make a small thing, grow vegetables / 創る: create - originate, bring into existence / 造る: build, construct - build a house, or a building

to use / to employ / to make use of, to apply / to spend