Definition of "Sod" :

noun: surface layer of ground containing a mat of grass and grass roots

noun: an informal term for a youth or man

"The poor sod couldn't even buy a drink."

noun: someone who engages in anal copulation (especially a male who engages in anal copulation with another male)

noun: an enzyme that catalyzes the conversion of superoxide into hydrogen peroxide and oxygen

verb: cover with sod