(arachnology) A lamellate respiratory organ found in arachnids.

(slang) One of a pair of large or womanly breasts on a man caused by pectoral fat, or sometimes a hormonal condition such as gynecomastia.

Alternative spelling of man boob

plural of man boob

The Bible, or by extension the scripture of another religion.

(idiomatic) To use one's superior physical strength. / (idiomatic, with "on") To scold severely.

(transitive, simile) To be able to discern someone's thoughts from his or her body language or other behavior.

(obsolete) An ABC book; abecedary; a primer.

(originally US, informal) Synonym of boomerang kid

(publishing) A book that is marketed to a general audience (as opposed to books that have specialized audiences, such as academic books).