| BIOFEEDBACKS | • biofeedbacks n. Plural of biofeedback. • BIOFEEDBACK n. a technique for learning control of autonomic body functions in response to monitoring by electronic instruments such as an electrocardiograph. |
| CRACKERJACKS | • crackerjacks n. Plural of crackerjack. • cracker␣jacks n. (English pluralia tantum) Popcorn coated in molasses. • Cracker␣Jacks n. Plural of Cracker Jack. |
| CYBERATTACKS | • cyberattacks v. Third-person singular simple present indicative form of cyberattack. • cyber-attacks n. Plural of cyber-attack. • CYBERATTACK n. an attempt to damage or disrupt a computer system, or obtain information stored on a computer system, by means of hacking. |
| DIAMONDBACKS | • diamondbacks n. Plural of diamondback. • DIAMONDBACK n. a kind of rattlesnake. |
| GOOGLEWHACKS | • googlewhacks n. Plural of googlewhack. • GOOGLEWHACK n. an Internet search that produces one hit only. |
| LEATHERBACKS | • leatherbacks n. Plural of leatherback. • LEATHERBACK n. a kind of large sea turtle. |
| QUARTERBACKS | • quarterbacks n. Plural of quarterback. • quarterbacks v. Third-person singular simple present indicative form of quarterback. • QUARTERBACK v. to direct the offensive play of (as a football team). |
| SCRATCHBACKS | • scratchbacks n. Plural of scratchback. • SCRATCHBACK n. a backscratcher. |
| SINGLETRACKS | • singletracks n. Plural of singletrack. • single␣tracks n. Plural of single track. • SINGLETRACK n. an off-road trail used by cyclists, wide enough for only one bicycle at a time. |
| STEEPLEJACKS | • steeplejacks n. Plural of steeplejack. • STEEPLEJACK n. a person who repairs steeples and high chimneys. |
| STICKLEBACKS | • sticklebacks n. Plural of stickleback. • STICKLEBACK n. a freshwater fish with a spiny back. |