(anatomy) A paranasal sinus contained within the body of the sphenoid bone.

(anatomy) Any of several paranasal sinuses enclosed within the ethmoid bone.

Alternative form of sphenoid sinus

plural of sinker nail

A peninsula in eastern Egypt, bordering Asia. / A mountain in Sinai Peninsula; the location where Moses is said to have received the Ten Commandments from God.

Consisting of a single word.

Even in the face of hopelessness and discontent, it is more worthwhile to do some good, however small, in response, than to complain about the situation.

(nautical) A light, narrow rowing boat, especially one used in competitive rowing, in which a single rower has two oars / (rowing, especially in plural) A race in which such craft participate

present participle of sing soprano / (idiomatic, euphemistic, of a man) Castrated or injured in the testicles.

(intransitive, literally) To perform vocal music in a higher pitch than alto. / (intransitive, idiomatic, euphemistic, of a man) To suffer castration or an injury to the testicles.