Homophones for ptere, tear, tier

ptere / tear / tier [ti:r] 

ptere - n. Zool. – a wing-like lobe of some sponge spicules

tear – n. – salty liquid drops secreted by the lacrimal glands by the eyes

Do Not Confuse With tear [tɜr] - n. & v. – n. a rip, a break caused by pulling apart (usually uneven); v. rip or pull apart

tier – n. – a layer in a series of layers such as for a cake, or an organization