waste under the silkworm-raising shelf

arrogant

top-heavy

height of the waist

length of [clothes] from the shoulder to the waist

be dark under the trees

dark place under the trees

gloatingly / with vigilant hostility

(keep an eye out) with vigilant hostility / (keep an eye out) by watch thirstily / (keep an eye out) with a vigilant eye / (keep an eye out) vigilantly / (keep an eye out) gloatingly

tympanic cavity