| MAINLINE | • mainline adj. Normal, principal or standard. • mainline adj. (Rail transport) Of or pertaining to the principal route or line of a railway.
 • mainline adj. (Rail transport) Of or pertaining to a surface railway as distinct from an underground, elevated or light rail one.
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| MAINLINED | • mainlined v. Simple past tense and past participle of mainline. • MAINLINE v. to inject a narcotic into a major vein.
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| MAINLINER | • mainliner n. A member of the mainstream. • mainliner n. Someone who mainlines (injects drugs directly into their veins).
 • MAINLINER n. one who takes a narcotic intravenously.
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| MAINLINES | • mainlines v. Third-person singular simple present indicative form of mainline. • main␣lines n. Plural of main line.
 • MAINLINE v. to inject a narcotic into a major vein.
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| GAINLINESS | • gainliness n. The condition of being gainly. • GAINLINESS n. the state of being gainly.
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| MAINLINERS | • mainliners n. Plural of mainliner. • MAINLINER n. one who takes a narcotic intravenously.
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| MAINLINING | • mainlining v. Present participle of mainline. • MAINLINING n. the act of injecting drugs intravenously.
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| MAINLININGS | • MAINLINING n. the act of injecting drugs intravenously. | 
| GAINLINESSES | • GAINLINESS n. the state of being gainly. | 
| UNGAINLINESS | • ungainliness n. The state of being ungainly. • UNGAINLINESS n. the state of being ungainly.
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| UNGAINLINESSES | • ungainlinesses n. Plural of ungainliness. • UNGAINLINESS n. the state of being ungainly.
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