[laugh one's head off] {v. phr.}, {informal} To laugh very hard; […]

[laugh up one's sleeve] or [laugh in one's sleeve] or [laugh […]

[laughing gear] {n.} Mouth.

[laughing matter] {n.} A funny happening; a silly situation. - Usually […]

[launch window] {n.}, {Space English}, {informal} 1. A period of time […]

[laurel] See: [LOOK TO ONE'S LAURELS], [REST ON ONE'S LAURELS].

[lavender] See: [LAY OUT] (7).

[law] See: [LAY DOWN THE LAW], [PARLIAMENTARY LAW], [TAKE THE LAW […]

[law of averages] {n. phr.} The idea that you can't win […]

[law unto oneself] {n. phr.}, {literary} A person who does only […]