鞘

to bury the hatchet

interest margin

to be evasive

sea pineapple (Halocynthia roretzi)

spear squid (Loligo bleekeri)

rivalry in love

sea squirt

leaf sheath

margin

rivalry in love

to slip out of one's scabbard (of swords)

to draw a sword

oedogonium (any of a genus of filamentous green algae)

schwannoma

outer roofed structure for protecting cultural assets and historic sites

ootheca

coleoptile

the world is at peace

red-lacquered sword sheath

tip of a scabbard

myelin sheath (around the axon of a neuron)

tenosynovitis

coleopterans

myelin sheath (around the axon of a neuron)

sheath of tendon

sharkskin scabbard

elytron

scabbard