| Frisian | alkje | whine, shout |
| Scand. | alka, alke, aalge | Little Auk, 72 |
| Engl.reg. | alk, falk | id. |
| Engl. | auk | id. |
| Germ.reg. | alk, alik | id. |
| Germ.reg. | älke, alleke, ahlke | Jackdaw, 285 |
| Nederl. | allike | Jackdaw, 285 |
| Dan. | allike | Jackdaw, 285 |
| Svensk | elak | goose, 27 |
| Germ.(MLG) | alcke | goose, 27 |
| Germ.: Hambourg | ahlke | (in tales) goose, 27 |
| Ital.: Badia | alca, alcûn | goose, 27 |
| Engl. | elk | Swan, 25 |
| Anc.Greek | alkyon | a sea bird ð1.12. |
| Ital.: Cal | alcuni | Herring Gull, 81 |
| Ital.: Abruz. | álâkâ | Herring Gull, 81 |
| Basque | alkoi | Common Tern, 97 |
| Cat. | alció, alcina | Common Tern, 97 |
| Prov. | alcyon | Common Tern, 97 |
| Ital.reg. | alcione | Black Tern, 100 |
| Pers.: Pahlavi | alka | domestic cock, 2 |
| Lezg. | alkuz, alek, etc. | id. |
| Anc.Greek | alektor | id. |
| Mod.Greek | alechtóras | id. |
| Anc.Greek | lakázo, lakeizo | to cry, to howl |
| Anc.Greek | lakétas | cicada |
| Lat. | oblecto | to entertain |
| Anc.Greek | lexis | word, elocution |
| Anc.Greek | lektikon | proper to speech |
| Basque | elakatu | to chatter |
| Germ. | lachen | to laugh |
| Germ. | schlackergans | Grey Lag-goose, 28 |
| Franç.: St.Lô | sliaqueter | chabauder, FEW 22: 8 |
| Anc.Greek | lakeryza | bawler |
| Lettish | lakStèt | to sound; laktina anvil; lakstinS hinge |
| Lith. | ladStingala et var. | Nightingale, 337 |
| Lettish | lakstigala et var. | Nightingale, 337 |
| Lettish | laskuoti | (metath.) to sing joyously |
| Frisian | lask | Skylark, 297 |
| Germ.: Helgoland | latsk | Skylark, 297 |
| Kashubian | laska, plasga | domestic duck, 40 |
| Anc.Greek | lasko | to cry, to howl, to sound |
| Pol. | klaskacz | Wheatear, 349 |
| Germ.reg. | klashan | Long-tailed Duck, 55 |
| Roman. | pleoscâi | to crack |
| Basque | lokantza | chattering |
| Anc.Greek | loquax | talkative |
| Ital. | loquela | discourse |
| Ital.: Taranto | lucculare | to howl |
| Ital.: I.Giglio | allucá | to howl; Abruz. allócâ howling |
| Ital. | locco, allòco | Tawny Owl, 238 |
| Port. | luca | Tawny Owl, 238 |
| Ital. | allòco, loccio | stupide: qui crie ou parle à tort et à travers |
| Esp. | loco | crazy (see preceding word) |
| Germ. | lockung | call |
| Germ.reg. | locker | Garganey, 43 |
| Arabic | laqlaq | White Stork, 127 |
| Caucasus | laklak | White Stork, 127 |
| Pers. | laklak | White Stork, 127 |
| Ital.: Abruz. | cilakilaki | Roller, 264 |
| Alb. | lylykës | Bee-eater, 265 |
| Anc.Greek | lalagès | tree frog; Bee-eater, 265 |
| Sorabian | lêlak | Corn Crake, 146 |
| Czech | lêlik | Common Sandpiper, 178 |
| Slavic | lelek | White Stork, 127 |
| Alb. | lejlek | White Stork, 127 |
| Sorabian | lilik | Waxwing, 329 |
| Pol. | lelek | Rook, 282 |
| Russian | leleku | Great Crested Grebe, 66 |
| Slk. | lelk | Stone Curlew, 154 |
| Slavic | lelek et var. | Nightjar, 251 |
| Lith. | lelys | Nightjar, 251; Lettish lèlis id. |