(architecture) A horizontal board, usually made of wood, on a windowsill, fitted against the bottom rail of the lower sash.

(idiomatic, of tasks, issues, problems, items) To fit into neither of two categories and, hence, be neglected or fail.

Unable to fit into either of two conflicting categories, and as a result likely to fail.

simple past tense of fall between two stools

past participle of fall between two stools

Third-person singular simple present indicative form of fall between two stools

present participle of fall between two stools

(medicine) A symptom of severe phosphorus poisoning in which stools (feces) laden with phosphorus are passed.

(medicine) A chart (and associated scale) that classifies human faeces, with limited use as a diagnostic aid.

plural of Bristol stool chart